At the shore of an ancient island (Hämeenkangas, Other areas)
Soininharju and Niiniharju were formed between two ice sheets, from material deposited by glacial meltwaters. After the ice age, the ridge was an island in the Ancylus sea. The water level was at 180 meters above current sea level. There was 20 meters of water cover in this location.
Nearby attractions: Hämeenkangas, Hämeenkankaan dyynikenttä, Isokeidas mire, Jämi, Geo-orienteering track of Jämi, History of the airfield of Jämi, The cooking shelter of Koivistonvati, The Koivistonvati kettle hole, The Kuninkaanlähde spring, The little stream starting from the Kuninkaanlähde spring, The Kylmänmyllynlähde spring, Augmented reality sandbox, Niiniharju, Border stone, Ruskalaavu or "The Fall Colour Lean-to shelter", Erratic, The Soininharju esker, The Southern slope of Soininharju, Sand field on Soininharju, Changing landscape of Soininharju, The viewing tower at Soininharju, The formation of a kettle hole, The Uhrilähde spring, Viheräperänkeidas mire
Coordinates (WGS84): 61.77743, 22.72063