The Pivovarovsky karst area, where Sakantsy was actually located, is the largest in the Vladimir region. On an area of approximately 7 square kilometers, there are about 200 different karst forms - ravines, lakes and depressions.
The largest lake in size and depth is Savrasovo, and Sakantsy was the cleanest. Now that there is no water in the lake, three funnels can be seen at its bottom. The maximum depth of one of the funnels is 20 meters.
A couple of dozen meters from Sakantsy is perhaps the most famous geographical feature of these places - the Pivovarovsky failure. It appeared in 1959 and today is partially overgrown with trees. The karst funnel is 80-90 meters in diameter and up to 45 meters deep.