The Kopas battery is a disused cannon battery under Oscarsborg Fortress. It is located on the ridge Kopas in Drobak. Sunny spring day. - Stock Photo & Image

Research walk with historians around the city of Verkhneuralsk to inspect architectural monuments, their destruction and restoration

Abandoned prison in underground bunker. Ghost of prisoner. Ex Soviet cold war bomb shelter. Hermetic doors of bunker. Pipes and valves. Low light condition. Bunker of fear and nightmares

Underground gold mine shaft tunnel drift collapsed

Chambres de bunker vides abandonnes

BIHOR, ROMANIA - SEPTEMBER 07, 2021: Exhibition with tools used by underground workers from Farcu Mine, Apuseni Mountains.

Underground Soviet bunker in its original form, Moscow, Russia.

An air-raid shelter for protection during the World War 2

An old room with old electrical devices, old chair with screen in the background

A closeup of an old destroyed and abandoned house

Inside of a fireplace chimney

Abandoned gold mine excavation in the wild west, there is a prop, jackhammer and lamp

Abandoned Mine in Broken Hills Coromandel, New Zealand lit up by a torch

The Kopas battery is a disused cannon battery under Oscarsborg Fortress. It is located on the ridge Kopas in Drobak. Sunny spring day.

A sloping gallery of a bunker of the Maginot Line in France