Ban Song Karia[1] (Thai: บ้านซองกาเรีย), also spelled Songkalia (ซองกาเลีย) and alternatively known as Songkurai (from Japanese: ソンクライ), is a village in the Sangkhla Buri District of the Kanchanaburi Province, Thailand near the border with Myanmar at the Three Pagodas Pass.

[3] The prisoners were tasked to create a 15 kilometre stretch of railroad including a wooden bridge over the Songkalia River (Huai Ro Khi).

[2] After Japan's capitulation, the British Army removed about four kilometres of rail road track between Nikki (Ni Thea) and Songkurai because it was deemed unsafe.

[7] First lieutenant Hiroshi Abe, the construction supervisor, was later convicted as a B/C class war criminal and sentenced to death.

[8] A school has been built on a former camp site, and the river is now crossed by Highway 323 towards the border.