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Cave at Navarino castle, Greece
The Cueva Palombeira, excavated vertically through the hill that presses against the gorge of La Balouta (in Las M dulas, Le n, Spain), is an artificial tunnel constructed for the evacuation of waste material from the gold mine of Las M dulas. Upon entering a few meters into the cavity, one becomes aware of a tunnel cleanly sculpted into the rock, running along the upper part of the cavern, with vertical walls and an arched ceiling. In contrast, the rest of the cavity is a narrow incision with irregular walls, exposing the structure of an ancient fossilized karst gallery. After the construction of the tunnel during the Roman exploitation period of Las M dulas, the continuous flow of mud and waste materials eroded the initial floor, carrying away the weaker materials that sealed the gallery. These materials consisted of alluvial conglomerates. As a result, the tunnel s exit is located at the highest point of a vast cone of debris that fills the La Balouta ravine and reaches the site of Salas de la Ribera, a locality directly built upon the waste materials from Las M dulas.
Insuyu cave from Burdur.
Belianska Cave (Belianska jaskyňa) in Tatra mountains
View inside Muller Tunnel on the Mt Lowe Road hiking trail in the San Gabriel Mountains near Mt Wilson and Los Angeles California.
The rocks and cliffs of the Cornish coastline under Tintagel Castle.  There is a natural arch formation in the foreground.
stalactites, stalagmites and large calcareous pillars inside the cave formed over millions of years
Orbetello, Tuscany, Italy: The cave at the tip of the straits extends for just under a kilometer horizontally and has a height difference of 3 metres.
Gorge Rakov Skocjan Valley (Rakek or Notranjski regijski park Rakov Škocjan), Notranjska Regional landscape park Rakov Skocjan - Cerknica, Slovenia (Slovenija)
Jomblang cave, Indonesia
Cave on the Swabian Alb (called \
Unique underground geology of  stalactites and stalagmites.
Dark cave
Man relaxing walk in nature on weekend. In front of small cave.
Cave mouth in the Enchanted Forest, Heaphy Track, Kahurangi National Park, Tasman Nelson region, south island, Aotearoa / New Zealand.
Salt mine caves reflecting symmetrically on a pool of Algae water in Garmsar of Iran
Footpath inside a cave
Ponorului cave fortresses in Apuseni national park, Carpathian Mountains, Padis, Romania
Drone aerial view inside Devetashka cave in north Bulgaria, near Lovech town
Moss covered rocks in Nimara Cave in Marmaris, Turkey
Viewpoint above mountains through a grotto, eroded in a calcareous cliff on a mountain. The tunnel has its walls covered with moss. The arches in the cave resemble the shape of two eyes. Carpathia
Cave system Skocjan, Unesco's world heritage site, Slovenia.
Dark cave opening showing green moss growing on wet rocks
Traversable cave with natural windows (Pokljuka gorge, Slovenia).
This cave is known for being the place where witches celebrated their covens in the 17th century.
Daglı sinkhole, Kastamonu, Turkey
Caves in the limestone rocks of the Rak River canyon, Cerknica - Notranjska Regional Park, Slovenia (Krajinski park Rakov Škocjan, Slovenija)
Photo Of Cave In Rakov Skocjan Slovenia
Scarisoara ice cave entrance, Apuseni mountains, Romania.
Cave in Chalk rock landscape of Polish Jurassic Highland  near by krakow in south–central Poland. View out of a cave at atumn time landscape
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