The Salt Cathedral of Zipaquirá is an underground Roman Catholic church built within the tunnels of a salt mine 200 metres underground in a halite mountain near the city of Zipaquirá, in Cundinamarca,
La Creación del Hombre, sculpture by Carlos Enrique Rodríguez (Based in The Creation of Adam by Michelangelo), Central Barrel vault
Main altar of the old cathedral, with cross
Main altar in the new cathedral with cross and angel sculpture.
The Chełm Chalk Tunnels are a system of tunnels dug into the chalk under the city of Chełm in eastern Poland. The tunnelling began in the Middle Ages for chalk mining and was discontinued in the 19th
Salt Cathedral of Zipaquirá
…Grand Roc in Savoie, France, southern Europe Chełm Chalk Tunnels, Poland, central Europe Frasassi Caves, Ancona in Italy, southern Europe…