Lauhanvuori National Park is a national park in the Southern Ostrobothnia region of Finland, on the border of Kauhajoki and Isojoki. It was established in 1982 and covers 53 square kilometres (20 sq mi). The park is characterized by its pine forestland, spring brooks, and swamps.
The Lauhanvuori mountain is a 231 m (758 ft) high moraine mountain and one of the highest points in Western Finland. The summit area was uncovered 9500 BCE when the glacier retreated, and it has never been under the water. Indeed, it was an island in the middle of the Ancylus Lake. The summit of Lauhanvuori is lusher than its surroundings due to not having been under the sea and thus having retained its loose soil and nutrients. The hillsides are barren and infertile.