Devetashka Cave, Bulgaria
This beautiful pic shows the Devestashka cave. Besides being an example of the amazing pictures from around the world, Devetàshka cave is a huge karst cave 7 kilometers from Letnitsa and 15 km northeast of Lovech, near the village of Devetaki on the east bank of the river Osam, in Bulgaria.
It is known for its long-term occupancy for the human and another type of biological populations during extensive historical periods, and also home to nearly 30,000 bats
