1278-194 - Wieliczka Salt Mine Tourist Route, Chapel of St. Kinga staircase in Kopalnia soli Wieliczka, UNESCO World Heritage Site, Krakow, Poland, Europe
1243-288 - Open-air and underground ruins of a 1st century Roman circus (chariot-racing track) and Tower, UNESCO World Heritage Site, Tarragona, Catalonia, Spain, Europe
321-5819 - Inside ice cave under the Vatnajokull Glacier, with cave guide looking up to hole in cave roof, near Jokulsarlon, South Iceland, Polar Regions
746-74708 - Gancia underground wine cathedral in Canelli, the barrels made by oak wood and named "barriques" where the wine is maturing, Asti, Piedmont, Italy, Europe
746-74710 - Gancia underground wine cathedral in Canelli, wine press double unit and thanks for traditional spumante production, Asti, Piedmont, Italy, Europe
746-74691 - Contratto underground wine cathedral in Canelli, the barrels made by oak wood and named "barriques" where the wine is maturing, Asti, Piedmont, Italy
746-74680 - Bosca underground wine cathedral in Canelli, artistic composition named "la Piramide" by Eugenio Guglielminetti, Asti, Piedmont, Italy, Europe
1225-371 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America
1225-373 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America
1225-369 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America
1225-375 - Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America
1116-39192 - Service Tunnel Under The Control Room Of The Very Large Telescope Of The European Southern Observatory, Paranal, Antofagasta Region, Chile