Krokodelnica is the largest of the three Popovska lakes, located north of the two lakes Ledevichka and Chukova Yama, and when excavations began in the area in 1953, the remains of a mammoth were found, which date back to before the last glaciation, about 180,000 years ago, and in 1971 the mud pits were flooded In the past, the lake is now home to many plants, animals, and water birds.