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Underground

Sewers, tunnels, drains, …

U-Verlagerung R

WW2-era underground factory built in an old slate quarry, to produce fuel for V2 rockets. It was captured intact by the Americans …

Kaolin quarry

Kaolinite is a type of white clay, typically used in porcelain. Some tunnels of this quarry where backfilled with old porcelain moulds.

Galerie du Renard

A tunnel from a coal mine, very instable and probably already collapsed by now.

Ore chute mine

This old iron ore mine featured many types of so called ‘ore chutes’: slides designed to transport iron ore from the bottom …

Les égouts

Sewage system of a small town with a nice variety of shapes and materials.