Concours Info Tourism

Ardois'Alle


Description

Discover the real Ardennes shale at Ardois'Alle in Alle-sur-Semois in the Ardennes of Namur. Time seems to have stopped in this slate quarry which closed its doors in 1948. During a guided tour, come and discover the deserted galleries where bats stand guard. A 45-minute visit to the shale basement of the Semois Valley will allow you to discover the slate industry, which has since disappeared. Exceptional setting, the slate quarry can only surprise and enchant you with its mysterious galleries, its underground rooms and the beauty of its aquifer. A thematic room and a projection will complete the guided tour in order to learn more about the techniques of slate shale. Guided tours are in French and Dutch.

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Regional weather

Day °C
28/08/2025 matige regen 15° / 21°
29/08/2025 lichte regen 12° / 19°
30/08/2025 zware regenval 12° / 20°
31/08/2025 lichte regen 12° / 17°

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