Trail erosion in the area of the Seven Rila Lakes Cirquе, Rila National Park, Bulgaria

Abstract

The study is of a pilot nature and aims to investigate and document the trail erosion in the Seven Rila Lakes Cirque, Rila National Park, Bulgaria. The width and maximum depth of the trails were measured in 31 randomly selected points on the trail network. The results show that in half of the studied cases there is а trail degradation, but in other cases, recovery processes are observed.