Tuesday, June 5, 2018

Cave and Hollow Place, Ground and Human, Enter and Rock

Cave and Hollow Place, Ground and Human, Enter and Rock

Sea Caves and Rock Shelters, Grotto and Cavern, Environment and Dolomite

Bedding and Plains, Vault and Gate, Pit and Subterranean

Defense and Coastal, Ventilation and Air Conditioning, Trench and Storage

Concrete Guard Posts and Camouflage, Depth and Tunnel, Formwork and Concrete

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