Hin Sam Wan (Thai: หินสามวาฬ, lit.

'three whales rock') is a 75-million-year-old rock formation protruding out of a mountain in Phou Sing, Bueng Kan province, Thailand, near the Mekong River.

It is so named because, from certain angles, the rocks look like a family of whales.

[1] Only two of the rocks (the "mother whale" and "father whale") are accessible by foot; the "baby whale" cannot be reached.

This Asia mountain, mountain range, or peak related article is a stub.