Ledenika is a cave in Vratsa Mountain, 16 km west of Vratsa. Approximately 300 m in length. Accommodated for tourists. 10 halls, ornate with stalactites, stalagmites, stalactones, rock draperies and waterfalls. A natural site and a national tourist beauty spot. Ledenika is the most frequently visited Bulgarian cave.The highest point of the Ledenika cave is called the Seventh Sky and it is within the capacity of the most ambitious tourists.
The Ledenika cave was opened for the first time in 1961. In 1962 it was proclaimed for a natural landmark.
The temperature in the cave varies from -7° C to -15° C (in winter in the Antechamber) and to 8° C in the inner parts. The moisture of the air is 92%.
The animal variety can not be rich in these conditions: bats, cave beetles, wood lice, little spiders. You can see only here the insect "Ledenikus" or "Lighthater". You can`t see many plants here, just lichen and moss.