Matka Canyon near Skopje contains numerous unexplored cave systems, including Vrelo Cave, one of the deepest underwater caves in Europe, and is a habitat for several rare and endemic species.
Record no. MRB-2026-006541
Matka Canyon's Rich Biodiversity and Unexplored Caves
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.