Tham Krasae Cave

Tham Krasae Cave is a small limestone cave shrine located in Lum Sum Subdistrict, Sai Yok District, Kanchanaburi Province, western Thailand. Situated beside the River Kwai Noi and the historic Death Railway viaduct, it houses a large Buddha image and is adjacent to Tham Krasae Railway Station. Notable for its scenic riverside setting, railway heritage from World War II, and religious use, it is a popular stop for visitors traveling the Kanchanaburi–Nam Tok railway line.

Visitors can expect a small natural limestone cave set against a cliff directly above the Kwai Noi River, housing a large seated Buddha image. The cave opens onto the famous wooden Wampo Viaduct where the Death Railway runs along the cliff edge. The area includes a railway platform (Tham Krasae Station), souvenir and food stalls, and viewpoints over the river and forested valley. Visitors can explore the short cave interior, view the Buddha shrine, walk along the viaduct viewing area, and watch trains pass.

The cave is associated with the Thailand-Burma Railway (Death Railway) constructed in 1942-1943 during World War II. The adjacent wooden viaduct and railway line were built using Allied prisoner-of-war labour under Japanese direction. The cave served as a shelter and resting place for labourers during construction and today forms part of the preserved heritage corridor of the railway.

The cave functions as a Buddhist shrine housing a large seated Buddha image venerated by local devotees and visitors. It reflects the Thai tradition of cave temples (tham) used for worship and merit-making, set in a scenic riverside location that combines religious and natural heritage.