Nature reserve Heidiland
UNESCO Spot No. 15 in the Tectonic Arena Sardona
Am Platz 1, 7315 Vättis
At Vättis, the crystalline rocks of the bedrock (Aarmassiv) were arched. In the area of the dome, glaciers and streams have created the valley, exposing the bedrock in a "geological window". Above the oldest rocks of the region follows a complete layer profile from the Triassic to the Tertiary period. At 2427 m above sea level is the Dragon Hole, where more than 53000-year-old cave bear bones and fire remains have been excavated.
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