Visit the ancient cave monastery complex of Dawid Gareji in Georgia
Ancient rock-hewn town on the Silk Road, inhabited from the Iron Age.
Twelfth-century monastery city carved storey upon storey into a cliff face.
Cave monastery above a river bend.
Vivid 5,000-year-old cave paintings.
Renaissance castle built into the mouth of a cliff cave, with secret tunnels used by a robber knight.
River cave of Maya skeletons and artefacts.
Golden-domed monastery complex above catacombs of mummified monks.
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