Western Finland borders the Gulf of Bothnia, its western border is coastline. The province has numerous caves, a few are popular tourist sites, but all are quite small and require cave trekking. There is even a karst cave.
Helvetinkolu
Hitonhauta
Lullinvuori Luola
Pirunpesä
Pirunpesä
Pirunpesä
Susiluola
Valkulamminvuoren Luola