Devetashka Cave, Bulgaria

Natural stone arches and green floor inside Devetashka Cave

Massive shadowed entrance and limestone wall of Devetashka Cave

Visitor path crossing the green, daylight-filled front of Devetashka Cave

Long skylight opening across the roof of Devetashka Cave

Vegetation growing beneath a tall opening in Devetashka Cave

Narrow roof opening framed by dark limestone

Bright green vegetation framed by a dark cave arch

Tall Devetashka arches above a stream and green cave floor

Blue sky and clouds visible through a cave skylight

Bright daylight pouring through a broad opening in Devetashka Cave

Bats hanging from a pale cave ceiling above dark water

Sculpted limestone reflected in a still cave pool