Graži vieta, Vilniaus apskritis
Strėvos įgriuva is a steep-sided basin-shaped depression in Aukštadvaris Regional Park, formed around 18,000 years ago when a buried block of glacial ice melted and the ground above it collapsed. Covering about 1.5 hectares, it is one of Lithuania's best-known thermokarst landforms and is wrapped in local legends about a tavern that supposedly sank into the ground. A 600-meter viewing trail with an observation area lets visitors look down into the depression without disturbing it.