Photographies sous licence par @damirissimo

Mountain road curving around dense low shrubs

Wide panorama of layered green Balkan mountains

Forested valley and distant ridges beneath a pale sky

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

Warm light falling across rocks on the cave floor

Round tunnel opening toward a railing in the darkness

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

Green mountain peak seen beyond rocky slopes

Bare tree in a black-and-white mountain landscape

Close view of bright green moss on the forest floor

Silhouetted visitor standing in a dark chamber of Ledenika Cave

Blue-lit cavern and footbridge inside Ledenika Cave

Visitor climbing illuminated steps through a dark cave hall

Narrow limestone passage lit with warm amber light

Tour group bending through a low tunnel in Ledenika Cave

Steep staircase disappearing into a dark cave passage

Black-and-white columns of flowstone inside Ledenika Cave

Illuminated cave formations surrounding a metal staircase

Close view of textured mineral deposits on a cave formation

Tall stalactites and a staircase in a black-and-white cave chamber

Long-horned beetle crossing a sunlit dirt road

Straight forest road seen through a vehicle windscreen

Four-wheel-drive vehicle approaching a broad puddle on a dirt road

Four-wheel-drive vehicle throwing up water as it enters the puddle

Front view of the vehicle emerging through a wall of spray

Four-wheel-drive vehicle cutting through the puddle at speed

Water spraying around the vehicle on the muddy track

Vehicle driving out of the puddle between grassy verges

Close view of the vehicle surrounded by suspended water droplets

Cluster of small yellow wildflowers in wet grass

Yellow railway service vehicle at Koprivshtitsa station

Cracked window in the yellow railway service vehicle

Controls and driver cab inside the railway service vehicle

River and wooded hillside seen through foreground leaves