The Railway That Returned From the Deep

Imagine discovering that there is a railway station at the bottom of a lake. You know it’s there, because old maps and photographs tell you so, but unless you’ve developed a particularly good technique for underwater archaeology, there’s not much chance of going to have a look. Then, one day, the water level drops and suddenly the railway is sitting there in front of you.

That’s more or less what happened at Nithe Station in Kanchanaburi Province a few months ago. After more than 40 years beneath the reservoir created by Vajiralongkorn Dam, the water receded far enough to expose a surprisingly large section of the old railway, including the station area, track formations, junctions and wartime bomb craters. For a short time, something that had been hidden from view for decades was suddenly available to anyone prepared to put on a pair of walking shoes.

Why Was Nithe Station Hidden Underwater?

There was no great mystery behind the disappearing reservoir. The Electricity Generating Authority of Thailand (EGAT), which operates the dam, needed to lower the water level while inspection and maintenance work was carried out on the generating facilities. As the reservoir fell, the old landscape gradually emerged from beneath it.

The timing was perfect for anyone interested in history. The water dropped far enough to expose much more of the old railway than is normally visible, while the newly exposed ground had not yet been reclaimed by vegetation. Instead of a few isolated remnants, there was suddenly a remarkably clear picture of how the railway had once crossed the valley.

But this wasn’t just any old railway.

Nithe Station and the Death Railway

Nithe was part of the notorious Thailand–Burma Railway, better known as the Death Railway, constructed by the Japanese during the Second World War. Allied prisoners of war and huge numbers of Asian labourers were forced to build the line in appalling conditions, and thousands died from disease, starvation, exhaustion and mistreatment.

I’ve already written about the terrible human story behind the railway, including the remarkable Australian surgeon Sir Edward “Weary” Dunlop, so rather than repeat it all here please click on the link for that.

For this particular story, what matters is that Nithe was much more than a place where trains stopped. It was an important maintenance and supply center, strategically positioned before the railway headed into the difficult mountains towards Burma. Trains and locomotives leaving Nithe had some hard travelling ahead of them, so keeping them supplied and in good working order was an important part of keeping the railway operating.

After the war, the station and maintenance area was abandoned and the jungle gradually reclaimed much of it. Then, in the 1980s, the valley was flooded when Vajiralongkorn Dam was built, and Nithe Station disappeared beneath the reservoir. For more than four decades, that’s where it stayed.

The Lost Railway Emerges

As the water receded, the old railway formation began to emerge. The rails themselves have largely disappeared, but the raised track beds are still surprisingly clear, and the junction layout can be followed across the exposed ground.

This is what makes the site so fascinating. Looking at photographs of the exposed area, you can almost imagine it as a working railway junction. The lines of the old track beds are so obvious that you can picture a locomotive approaching from one direction, slowing down and taking the junction, even though the rails themselves have long since gone.

There are also remains of workshops and other railway facilities, along with water-related infrastructure that would have been essential for keeping locomotives operating. The multiple track formations and outlines of buildings give some idea of the scale of the operation. What initially looks like a rather unremarkable patch of dried-out reservoir floor starts to make sense once you realise you’re looking at the remains of an important railway maintenance center.

Then you notice the holes…

WWII Bomb Craters Around Nithe Station

Scattered around the station are bomb craters left by Allied air raids during the war. Some are remarkably obvious in the exposed landscape, and their presence is a particularly stark reminder that Nithe wasn’t simply a railway passing through a quiet corner of Thailand.

The railway was a Japanese military supply route, and the Allies knew that disrupting it was important. Aircraft attacked railway facilities along the route, and the craters left around Nithe have survived the passage of time remarkably well — although for much of that time they were sitting several meters beneath a reservoir.

Now they’re visible again and they give researchers something rather unusual; a wartime landscape that can suddenly be examined almost as it appeared many decades ago.

Researchers Explore the Exposed Death Railway

Naturally, people who have spent years studying the Death Railway weren’t going to miss an opportunity like this. Australian researcher Martyn Fryer had visited Nithe three times previously, but the water had always prevented him from seeing the complete layout. This time he was able to walk across the exposed site and examine the remains for himself.

Andrew Snow, a researcher with the Thailand-Burma Railway Centre, also visited the site. Using old maps and wartime aerial photographs from Britain’s National Archives, researchers were able to compare what they were seeing on the ground with photographs taken during the war.

There’s something rather satisfying about that. A photograph taken from an aircraft more than 80 years ago shows a railway station in operation, while today researchers can stand in almost the same spot and work out what was where.

It’s history without the glass display cases.

The exposed site has also revealed railway artifacts including spikes and other metal fittings, providing more clues about the railway that once operated here. For people who have spent years researching the Death Railway from old documents and photographs, being able to actually walk across the old station must have been quite an experience.

The 4×4 Incident at Nithe Station

Of course, whenever somewhere interesting suddenly becomes accessible, somebody is bound to arrive wanting to explore it.

In this case, an off-road group turned up with several vehicles, including a Toyota Land Cruiser. One of the vehicles ended up being driven into one of the historic bomb craters and getting stuck, resulting in its driver receiving a 10,000-baht fine for damaging an historical site.

I guess this is a funny side to the story, particularly when you consider that the railway had already survived a world war, Allied bombing, abandonment, jungle, and more than 40 years underwater before getting run over by an SUV.

But there is also a serious point. An historic site doesn’t become less fragile simply because the water has temporarily disappeared, and some of the things being exposed at Nithe have survived for over eighty years.

Perhaps the best way to explore a place like this is therefore to leave the four-wheel drive somewhere sensible and use the rather old-fashioned method of walking.

When Will Nithe Station Disappear Again?

That’s a fair question; there is one unavoidable problem with this temporary railway resurrection. The water is coming back.

The reservoir was lowered for maintenance, not because anybody intended to permanently uncover Nithe Station. EGAT is expected to complete the work during August 2026, while the monsoon rains are already helping to replenish the reservoir as I write.

Exactly how quickly the water will rise depends on rainfall and dam operations, but the exposed railway isn’t going to remain visible indefinitely. Before long, the old track beds, workshops and bomb craters will gradually disappear beneath the water once again. And that is perhaps what makes this particular glimpse of Nithe so special.

For a short time, researchers and visitors have been able to walk across a railway that has spent most of the last 40 years hidden beneath a reservoir. They have been able to see the layout of the old station, examine wartime remains and, with a little imagination, picture trains once again moving through the junction.

Then the water will cover it all.

The Railway That May Return Again

The station will be swallowed up by the reservoir again before too long, but at some time in the future there’s a fair chance it will reappear once more, giving researchers and visitors another chance to explore it.

Hopefully, next time, they’ll leave the SUVs at home.