The oldest-known human bones in Europe were just discovered in a cave in Bulgaria. The cave also contained ancient tools ...

This cave is in northern Bulgaria. It was named after two brothers, Seyu and Sae, who are rumored to have hidden in the cave during the Ottoman occupation of Bulgaria. The cave is known for having ...

In Bulgaria’s Bacho Kiro cave, which was already known to have housed Neanderthals more than 50,000 years ago, researchers have discovered the remains of ancient humans that date to about ...

Jenolan Caves in the Blue Mountains World Heritage Area (about three and a half hours from Sydney) are the first caves in the world to be lit by electric light for visitors to explore. Stepping in ...