The village of Bosnek is located some 30 km away from Sofia, in the Pernik region.

The village is well known for the Duhlata cave, which is the longest (17,600 m) and the deepest (53 m) cave in Bulgaria.

However currently the cave is closed for visitors.

Not of a lesser importance as a sight is the so called living water spring from which the water stops and starts flowing at random time intervals. Therefore it is believed that when s sinful person steps up in front of the spring it stops flowing.

The water flows from a stone sculpture which resembles the head of a crocodile (it flows from its mouth).

Some 15 min walk from the spring there is a dry cave, which houses a picturesque stone icon.

The cave has been discovered in 1928.