This is the disputed angkorean temple called Preah Vihear on the Cambodian-Thai border. There have been a few small clashes between Thai and Khmer forces over the land in this area. A few Cambodians have been killed by Thai soldiers.
Next trip to Cambodia/Thailand, I am going to see this place if I can. Look at the Temple and the area. Magnificent. Beautiful.
And, a bit dangerous:
In the guidebook, Adventure Cambodia, published at the end of 2000, the trek to Preah Vihear from Choam Khsan town is described as follows:-
Along the way to the mountain temple, you will notice pieces of vehicles hanging from up in the trees here and there from unfortunate souls that hit a landmine. It’s an eerie reminder in this peaceful and uninhabited forest area of the deadly devices that are still lurking about this area in big numbers. The soldiers at the base camp are a friendly lot that will allow you to park your bike at their camp while you hike up to the temple and you can figure that the bike will still be there when you return. It’s not required but it’s a real nice gesture to give these underpaid guys a few thousand riel to watch your bike – good insurance and you will make some friends. It’s a good idea to have your moto guy or a soldier lead the way on the winding upward climb to the temple. The mountain is riddled with landmines and while, if you follow the golden rule for Cambodia – always stay on worn pathways and roadways – you will be okay, there are intersecting pathways, where it’s difficult to figure out which way to go. I did the hike alone but there was some question on which path to follow at a couple of spots.