List of caves in Bulgaria

The list caves in Bulgaria, as of 2002, includes around 4,500 underground formations.

[1] The earliest written records about the caves in Bulgaria are found in the manuscripts of the 17th century Bulgarian National Revival figure and historian Petar Bogdan.

The longest caves in Bulgaria are Kolkina Dupka (19,164 m), Duhlata (18,200 m) and Orlova Chuka (13,437 m).

The first show cave is Bacho Kiro, inaugurated in 1937.

Nowadays, there are 10 tourist caves accessible to the public for guided visits in Bulgaria.