Lukina jama–Trojama

The Lukina jama-Trojama system extends through 3731 meters of limestone passages and reaches a depth of 1431 meters below the surface entrance.

Scientists discovered this underground network in 1992, leading to extensive geological studies that revealed it as the deepest cave system in Southeast Europe.

The cave system stands as a central point for Croatian speleological research, drawing experts from multiple countries to study its intricate passages.

Access to the cave requires official permits, specialized equipment, and professional guidance due to its location within the Northern Velebit National Park.

The cave system contains pools that host the largest known colony of subterranean leeches, which scientists identified as an entirely new species.

Location: Lika-Senj County

Elevation above the sea: 1,438 m

Height: 1,431 m

Length: 3,731 m

GPS coordinates: 44.76690,15.02640

Latest update: March 5, 2025 12:22