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Tagsunderground
3 places carry this tag, across every kind and continent it appears in.
🇬🇧 United Kingdom · Megalith
Iron Age (c.100 BCE–400 CE) · Atlantic Iron Age (Orcadian) / possible Roman contact
Iron Age underground sanctuary in Tankerness with 29-step stair descending 7.5 m to a corbelled chamber.
🇹🇷 Turkey · Underground city
Byzantine (with Hittite/Phrygian antecedents debated) · Byzantine Cappadocian / earlier Phrygian/Hittite use
Deepest excavated underground city in Cappadocia, connected to Kaymaklı and 200+ subterranean complexes via 8 km tunnel. Rolling stone doors 500 kg, ventilation shafts, chapels, wineries.
🇹🇷 Turkey · Underground city
Hittite to Byzantine · Phrygian / Byzantine
Second major Cappadocian underground city, 8 levels open to tourists, rolling doors, stables, wine storage, connected to Derinkuyu via tunnel.
