Sedimentary rocks dominate the southern half of the island, especially Old and New Red Sandstone.

In the summer of 1953, he noted yellow crystals coating sandstone at the mine which he thought might be mineralogically significant.

Ferron Sandstone north of the area contains seams of coal in its upper part, prompting some petroleum geologists to study this member to model oil bearing regions.

Access to the temple is by an earth bank to the east and a sandstone causeway to the west the latter, the main entrance, is a later addition, possibly replacing a wooden bridge.

Near Kallaste, there is one of the largest surfacings of Devonian sandstone with a length of 930 m and a maximum height of 8 m, as well as several caves and one of the largest colonies of swallows in Estonia.