Philenews

How the Three Impressive Stone Whales of Thailand Were Formed – They Seem to Swim Within the Forest

Published February 10, 2026, 17:25
How the Three Impressive Stone Whales of Thailand Were Formed – They Seem to Swim Within the Forest

Hin Sam Wan, internationally known as Three Whale Rock, is an impressive natural formation in northeastern Thailand, named for its striking resemblance to a family of whales seemingly 'swimming' within the forest. The formation consists of three huge, elongated, and rounded rocks that rise above the dense vegetation of the area, creating the illusion of giant cetaceans floating in a green 'sea'. The formation was created about 75 million years ago, as a result of long-term erosion and tectonic uplift. Wind and rain gradually shaped the sandstone in northeastern Thailand, smoothing the surfaces and creating cracks that contributed to the rocks taking on the slender, elongated shape that today resembles whales. Three Whale Rock is located near the border of Thailand with Laos, within a forested protected area called Phu Sing Forest Park. A network of hiking trails leads to the three rocks, however only the two largest —the 'mother' and the 'father'— are accessible to the public. The smallest rock, the 'baby', remains closed to visitors. According to National Geographic, the view from the 'backs' of the two larger stone whales extends to the Mekong River and the mountains of the Pakkading region in Laos. The rocks are located on a high ridge and protrude above the forest canopy, enhancing the illusion that they are marine creatures in their natural environment. Three Whale Rock and the surrounding area are part of the Khorat Plateau, a zone of elevated sedimentary rocks that has yielded significant fossils. Traces of life from the Cretaceous period (145 to 66 million years ago), as well as from the Cenozoic era, which extends from before 66 million years ago to the present, have been identified in the area. Phu Sing Forest Park and its characteristic rocky formations are protected as areas of natural and cultural heritage, constituting one of the most remarkable geological and landscape attractions in northeastern Thailand.