Showing posts with label fence. Show all posts
Showing posts with label fence. Show all posts

Friday, September 15, 2023

Pyongyang: COVID Fortress

AccessDPRK has been at the forefront of using satellite imagery to uncover North Korea's anti-pandemic measures. It was the first to use satellite imagery to verify reports of the "border blockade", it was the first to offer a nationwide look at those border changes via the AccessDPRK map, and it was the first to expose a network of covert COVID isolation facilities that was built across the country.

Screenshot of KCTV program (July 27, 2020) showing a COVID disinfection checkpoint along the Pyongyang-Kaesong Highway. Image source: NK News.

North Korea has used the pandemic to clamp down on human movement and trade in the most extreme ways, and it has relied on myths and pseudoscience to back up its policies. From claiming that COVID could pass into the country from Chinese dust to putting people in quarantine for coming into contact with objects from South Korea - despite there being very little evidence that one can contract the virus by simply touching an object - North Korea's anti-pandemic measures have caused an inordinate amount of harm.

Of course, given the state of the country's healthcare system, any pandemic could pose an existential threat to the state (to say nothing of the people living there). That is why it's little surprise to discover that authorities embarked on building not just border and coastal fences but have tried to erect an anti-COVID barrier around Pyongyang itself. 


First, however, I want to review the other infrastructure changes that North Korea has instituted in its fight against COVID.

North Korea was the first country to completely close their borders in response to the COVID-19 pandemic. To accomplish this, not only were all border crossings closed and trade & tourism suspended, but authorities erected hundreds of kilometers of new border fence (often in two layers) as well as repaired and modernized the existing border fences.

Map showing all border and coastal fencing as well as fences along the DMZ.

As part of the border closure, they added over 15,000 additional guard posts and garrisons along the border with China and Russia. They also improved security along both coastlines. AccessDPRK has verified the existence of 2,008 km of northern border fence and 1,567 km of coastal fence that now ring the country (plus hundreds of kilometers of DMZ fences). 

Within the country, numerous checkpoints were set up to further limit human movement and the spread of the disease. Some of these are simple tent-like structures where a person's temperature can be taken, and others are existing vehicle inspection points that have been expanded to allow for decontamination processes.

At the border crossings, most have simply remained shuttered. But at Sinuiju (the main crossing with China) and Tumanggang (the only crossing with Russia), new facilities to quarantine and disinfect goods and people were set up to handle what little trade has occurred since 2020, and to prepare for when trade is normalized again. There is also evidence of disinfection infrastructure being built at the ports of Nampo and Tanchon.

Location of all identified COVID isolation facilities. 

And as part of actually providing a level of medical care, albeit a questionable level, dozens of suspected COVID isolation facilities (95 at last count) have been constructed throughout the provinces. These highly secured compounds can isolate patients who test positive with COVID or have a severe "unidentified" fever, while not taking up additional room in the country's poorly staffed and supplied hospitals. Within Pyongyang, the city's hospitals have all had dedicated COVID wards set up.

It is within this context that I want to detail the latest apparent COVID infrastructure project: fencing off Pyongyang itself.

Map showing the location of the capital COVID fence. The yellow lines represent confirmed fence paths. The white lines represent rows of guard posts that may or may not be connected by fencing.

Because there are gaps in the available image data from Google Earth, I haven't been able to map out the full system as it exists today, but I have been able to locate enough of it to provide this review.

Beginning no earlier than March 2020, the construction of a series of fences, guard posts, garrisons, and checkpoints began. In parts of the city, the first iteration of the system was already built by October 2020, while in other areas construction extended until at least June 2022. 

Detailed look at the fence with a garrison building and guard posts visible.

Another detailed view of the fence. The fence's path is clear as are the guard posts and foot patrol path.

Based upon the available imagery, there are at least 63.2 km of clearly identifiable fencing with a further 22.9 km of rows of guard posts that may or may not also be connected by fencing. The guard posts are typically spaced every 75-100 meters. With 86.1 km of fenced and unfenced guard post lines, that means that roughly 1,000 guard posts (between 861 and 1,148) have been constructed around the city. 

Locations of garrison (barracks) buildings.

Just like with the country's border fence, these posts are supported by a network of at least 28 purpose-built garrisons (barracks) - six of which were actively under construction in June 2022. There are several other sites that I believe are now being used as garrisons, but they were previously used for other purposes. I haven't included them on the map because of a level of uncertainty. 

Locations of identified checkpoints, both pre-existing ones and newly constructed.

The fence system is also interconnected with the capital's checkpoint network and consists of 35 checkpoints of various types. Of those, twenty were built since 2020 and several of the preexisting sites have had visible upgrades. 

Explanation of gaps in the fence system. "Image gaps" refers to a lack of more recent imagery available on Google Earth.

There are parts of the terrain around Pyongyang where I have not been able to identify any new fencing. However, some of these areas are already "protected" by existing fences from factories or agricultural places, and those fences have been incorporated into the new system. Additionally, large sections of eastern Pyongyang are afforded security by the wide Taedong River (which serves a natural physical barrier), and northern sections of the city are mountainous and filled with military bases - effectively creating large swathes of inherently restricted territory. 


Thus, Pyongyang now sits at the center of a multilayered security network; a city that already required permits to visit, can now shut itself off from the rest of the country at-will. This doesn't only include restricting traffic from the main roads (an ability that has always existed), but even prevents Pyongyang farmers from coming too close to the city core by merely crossing a field on foot. 

The Central Quarantine Command oversees Pyongyang's anti-pandemic measures, instituting lockdowns, and enforcing the various government orders relating to the pandemic. However, whether or not this capital fence system is subordinate to the CQD, is part of the capital police force, or is part of a multi-agency force isn't yet known. 

I reached out to several North Korea experts including those with access to information from within the country, and only hints of information about this fence have begun to make it to outside researchers - and there had been no independent verification of it until now. It seems that North Korean authorities have been keen on keeping it a secret. 

However, as defector and former Pyongyang resident Hyun Seung Lee told me, it is "highly possible [that such a fence was constructed] since the country's top priority is Kim Jong Un's health. If anything COVID-19 related happened inside North Korea, none of the authorities will be free from responsibilities to protect the leader."

Considering the large number of checkpoints that already restricted access to Pyongyang, it may seem redundant to build dozens of kilometers of fences and a thousand guard posts to further cut off the city. Yet, North Korea not only built over 15,000 additional guard posts to seal off their northern border they also built fences all along the coastline. And so, North Korea seems to fight viruses with the same tactics as they would an invading army - block the enemy from being able to move. in this case, the general population plays the role of "enemy".

Although North Korea appears to be preparing to reopen its borders, it's clear that they have invested in the physical infrastructure needed to reenter lockdown at any time, and to continue to further restrict human movement within the country. This latest discovery underscores the paranoid nature of the state and demonstrates how Kim Jong Un would rather resort to force (sealing off the capital and placing thousands of guards on patrol) than take helpful steps like granting general access to vaccines or allowing adequate humanitarian aid into the country. 


I would like to thank my current Patreon supporters who help make all of this possible: Alex Kleinman, Amanda Oh, Donald Pierce, Dylan D, Joe Bishop-Henchman, Jonathan J, Joel Parish, John Pike, Kbechs87, Nate Odenkirk, Russ Johnson, and Squadfan.

--Jacob Bogle, 9/15/2023

Friday, May 14, 2021

"Border Blockade" - DPRK Clamps Down Like Never Before

North Korea has always been a relatively closed country, and casual international travel has never been an option for the population. Thus, the state has taken numerous measures to close off their border with China to prevent illegal trade, defections, and to limit the spread of outside information.

In this undated image, guards maintain a section of border fence along the Yalu River. (Source

Major events have led to the breakdown of this system as local soldiers and police became susceptible to bribes and internal pressures meant citizens were emboldened to cross the border to earn a livelihood (and a relative few to escape). One such event was the famine of 1994-98. During this time Kim Jong Il attempted to tighten border controls and drastically limit internal travel as well. One of these projects was a national fence system that integrated border security with cutting access to the sea, to prevent illegal fishing and defections via boat.

Kim Jong Un reinvigorated these measures and has been very successful in cutting down the number of defectors; although, less successful at stopping illegal trade. He has also renovated poorly maintained sections of the coastal fence.

The biggest changes, however, have taken place at the Chinese border. Extra guard posts, cameras, signal jammers and other technologies to track and interfere with cross-border communications have all been added. Those, along with enhanced punishments for police and border guards who allow themselves to be bribed, have cut defections down to the lowest levels since before the famine.

However, the latest attempts to control the Sino-DPRK border go well beyond anything we have seen before. The intersection of the government's desire to gain greater control over market activity by limiting illicit trade and its perceived need to hermetically seal the country away from the world to keep COVID-19 from ravaging the nation, has led to border cities practically being turned into their own prisons. 

As first described by AllSource Analysis, cities like Hoeryong have had a double layer of (likely electrified) fencing added, the number of guard posts has dramatically increased, and even farmers must now pass through checkpoints in order to access their fields near the border. 

Up and down the Sino-DPRK border, these additions that have collectively been referred to as a "border blockade"can be verified through commercial satellite imagery.


The city of Wiwon (40.892144° 125.965411°) is one such county seat where new fencing and guard posts can easily be seen.

Fencing does not run the full length of the border. In many places, like Wiwon, dams create wide and deep reservoirs along the Yalu River and the outflow of the dams mean that the river doesn't freeze over in winter - preventing an easy walk across. Additionally at Wiwon, there is no riverfront road. The only road leads south, away from the border. Thus, the only way to get away from the active patrols of police in the city is to walk through forests and mountains in the hopes of finding a better spot to cross. 

These natural obstacles are no longer deemed sufficient. In late 2020, the poorly maintained partial fence that had existed was rebuilt and extended across the whole town's riverfront area.

The old partial fence at Wiwon.

The old fencing was repaired and new fencing added, cutting off access to a stream and preventing people from walking across a dirt road to reach the Yalu River. The Wiwon fence now runs for 1.5 km, anchored by the impassible Wiwon Dam and mountains to the south.

Added border controls have also popped up in much more rural areas, like at the villages of Kosan-ni and Phosang, 20 km upriver from Wiwon.

The blue line marks out the original border fence that has been renovated. The black line marks out the new, secondary fence that was only recently constructed. The number of guard posts were also dramatically increased.

To access the land in between the two fences, farmers must now pass through checkpoints. The new fence is not yet complete and new sections and guard sites are being built. The largest chunk of land in this one area cut off from easy farming is approximately 126 hectares (311 acres). While this doesn't prevent the land from being farmed, it does make the process even more difficult and makes it harder for the lowest class of citizen to engage in trading activities.



The regime has even added security in cities where security and surveillance is already strong. Manpo is a border city with an official border crossing. It is also home to important chemical and industrial facilities which necessitate higher security on their own. 

Manpo has a levee to protect it from a flooding Yalu and has border guard posts built on top. There are also guards and police deployed along the border crossing and in the hills that encircle the city. Regardless of these controls, a second fence line was added just a few meters behind the already secured levee. 


The cities of Yusong and Hoeryong, which lie on the Tumen River, have been fenced off together to form a single security area. 


There have been 14 km of new fencing built connecting the cities. The new fence ties into the main line of border fence at each end which are then anchored by hills next to Yusong and Hoeryong, preventing people from crossing the Tumen in this area.

The new fence here also follows the path of the railway, something it does in other areas as well. This provides the added security effect of keeping people from being able to jump on or off trains in an attempt to circumvent internal security checkpoints and train stations, where travel documents must be examined.


In 2018, the AccessDPRK database only had eleven identified guard posts along this same area; roughly one for every 1.2 km. With these new changes, including additional posts on the first fence and the ones associated with the second fence, there are posts every 60-100 meters with some as close together as 40 meters. For both fences combined, that's anywhere from 280 guard posts (one for every 100 m) to 466 (if one for every 60 m).

There have been DailyNK reports that even the regular army has been brought into some of these areas to help build the fencing and man its positions. However, I do not think that every single guard post will permanently remain manned. I think they will serve more as a deterrent, as any one could have an armed soldier in it and the locals won't know which ones do or don't at any given time.

If I can interject some personal feelings, I find the additional fencing and guard posts at Yusong and Hoeryong even more tragic, as this area has been the victim of two major floods in just five years. The sense of helplessness among the people at seeing the new construction - that they can't leave a very dangerous area or stock up on traded goods in the event of another disaster - must have been palpable.


Pyongyang may be determined to put an end to defections (something they're very close to doing) and they are desperate to prevent the spread of COVID-19, the country is equally desperate to resume importing goods from China. COVID-19 has wrecked the national economy and it has been speculated that the government is nearly out of foreign currency reserves. It may be a tight rope walk between the tasks of border security, public health, and trade, but it is journey they must navigate. To that end, while coinciding with these stricter border controls, the preparations to resume limited trading seems to be underway.

Activity between the Dandong and Sinuiju customs areas has picked up and the nearby military airport at Uiju is apparently being turned into a disinfection center to handle goods and human traffic. 

Even a socialist paradise can't live off of autarky alone.


I would like to thank my current Patreon supporters: Amanda O., GreatPoppo, Joel Parish, John Pike, Kbechs87, Planefag, Russ Johnson, and ZS.

--Jacob Bogle, 5/13/2021

Thursday, January 18, 2018

North Korea's Great Barrier

I first wrote about North Korea's caged population in 2013, where I showed the fences that surround the country. Since then, I have been able to map the full system of fences, guard posts, and gates. And since the general situation regarding population movement has changed since then as well, I want to revisit the topic and also provide you with the Google Earth file so you, too, can explore the miles of fences and blocked off beaches, as well as to provide added evidence of the horrific human rights situation that exists. If you're primarily interested in getting the KMZ file, click here.

Guards maintaining a section of border fence along the Yalu River. (Source

First, a quick refresher. Much of North Korea's coastline and land borders are fenced off. According to multiple defector and media reports, some portions of fence are electrified while others are simply guarded by police. Of course the southern border (aka, the Demilitarized Zone/DMZ) has been turned into, perhaps, the most impenetrable 820,210 feet (155 miles) of border in the world. Ever. Apart from the hundreds of thousands of troops stationed along the DMZ, it has over 1,000 observation towers and forward military posts. Finally, the border with China (and the small section with Russia) is protected by large reservoirs, rivers, and in many places, fencing as well.
The purpose of these barriers is to keep people inside the country. Construction was sped up during the famine as the regime tried to cope with the mass movements of people, risks of defectors stealing boats, and as the government struggled to maintain their control in all sectors of society.

All of this means North Korea's population really is caged. A more colorful description of the country would be as an open-air prison.

The following images show the extent of the national fence system. Click on images for an enlarged view.


I was able to map nearly 1,400 miles (1,399.36 to be exact) of fencing. There are lots of small coastline sections where the paths of fencing can still be seen, but the fence itself is gone - likely pillaged for scrap metal by locals, however, most of the gaps you can see (and all of the large ones) are due to either natural barriers or where direct access to the sea/border is blocked by an industrial site, military base, or other construction that itself serves as a barrier.

Many coastal towns and villages lack a fence and instead the coastal portion is lined with dockyards and factories which requires locals to go through any number of gates or checkpoints, if they're permitted through at all. I've tried to map as many gate houses as possible that provide direct access to the coast. Ones that simply allow access to a factory or other site adjacent to the sea are not marked.

This next image shows the reason for each of  the major gaps in the fence system.


This image shows 837 identifiable police border guard posts and 434 stand-alone watchtowers along the the DMZ.



Under Kim Jong Un, miles of new fencing have been erected as well as older fencing upgraded in certain areas. A large number of additional watchtowers have been added along the fence routes as well, particularly in the northern regions. However, border controls extend well beyond fences and watchtowers. Cell phone single jamming towers, cameras, and other surveillance equipment have been deployed along both borders, but efforts have particularly increased along the Chinese border (which is the route most defectors take).

A related issue is the increased border protections China has been implementing. As with North Korea, China has begun to build fences (of a far greater quality than the DPRK) along certain key border sections to stem the flow of defectors. They have also constructed signal jamming towers and increased police and military patrols. China's active attempts to catch defectors by checking train stations, setting up road blocks, and patrolling neighborhoods, occur not only in the immediate border region, but far into the interior in major cities like Jilin.

The following series of images clearly show the individual fence posts and come from different parts of North Korea. Additional images can also be found in the original 2013 post, A Caged Population.





As both Kim Jong Un and China have taken a much harder line regarding border security, there has been a real and measurable effect on the numbers of successful defections. In 2017 there were 1,127 defectors who made it to South Korea, which is a decline of 27% from 2016. That was the lowest figure since 2001. The total number of defectors peaked around 3,000 in 2009, meaning there has been a decline of ~62% overall.

Despite the barbed wire fences, guards with automatic weapons, the high risk of women being sold into sexual slavery, and the risks of repatriation and imprisonment (or execution), people still brave the cold waters of the Yalu River and the forests of northern China to find their way to a better life. Even soldiers posted along the DMZ, who tend to belong to elite families and are generally more well off than soldiers stationed elsewhere, accept getting shot at 40 times (or even kill other DPRK soldiers) to cross into South Korea.

Kim Jong Un may have been successful in curbing overall defections, but the drive to feed one's family and the desire to experience the freedoms of the outside world (that North Koreans are increasingly being exposed to) will continue to inspire and embolden people to take the risks and seek a better life.

To download the full KMZ file and explore the sites yourself, click here. (Must have Google Earth to access.)


--Jacob Bogle, 1/18/2018
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