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This underground quarry left abandoned for nearly four decades holds beautiful 400-year-old artwork hidden within its walls.
Used as a hideout during the second world war, this former marl quarry in the Netherlands hosts spectacular drawings of religious figures believed to have been sketched from chalk.
Scenes - Moments - Jesus - Angels - Figures
The sprawling scenes depict biblical moments of Jesus, angels and other important Christian figures alongside other murals.
The chapel at the deepest depths of the quarry, where most of the pieces can be found, is untarnished by tags or graffiti like others in the area.
Safe-zone - War - Tours - Quarry
After serving as a safe-zone during the war, tours were given in the 1970s until the quarry was deemed unstable and closed.
Urban explorer Bob Thissen, from Heerlen, the Netherlands, believes the beautiful pieces should be preserved in a museum before nature has time to destroy them.
'The - Part - Quarry - Drawings
He said: 'The best part about this quarry are the up to 400-year-old drawings.
'You see a lot of religious figures like Jesus, angels and similar paintings which you expect to see in a regular church.
Drawings - Museum - Matter - Time
'The drawings are gorgeous and very detailed, they should be kept in a museum to be preserved. It's only a matter of time until nature destroys them.
'I did not want to touch the drawings...
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