To the south of the municipal centre of Taipalsaari is a glacial river deposit known as Saimaanharju, which is part of the fragmented ice-marginal formation zone between the Salpausselkäs. The zone shows a position of the ice edge which is younger than the First Salpausselkä but older than the Second Salpausselkä. Some of the settlement in Taipalsaari can be found on the top of Saimaanharju, which is dotted with kettles. Its slopes feature ancient shorelines and a Stone-Age dwelling and burial spot to the south of the formation in Vaateranta. The Saimaaharju area can be reached by driving the road 408 south of the municipal centre for about 3.5 km.