The Top 13 Caves around Herstal
Looking to visit a cave around Herstal on your next adventure? To help you better plan your next outdoor experience, we’ve collected Herstal’s 13
best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.
best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.
Last updated: November 23, 2025
Heyoule Nature Reserve
Highlight • Natural
The underground tunnels made of tuff and flint, a refuge for the inhabitants during the wars, are inhabited by several colonies of bats during the winter. But thanks to the …
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Sentier des Meuniers in Réserve Naturelle Heyoule
Highlight (Segment) • Trail
Partly normal path and then a hollow road with a fairly steep drop that follows the dry valley through the Heyoule nature reserve (see the highlight). The ideal habitat for …
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Casino Grotto, Parc de la Chartreuse
Highlight • Cave
Unexpected place in the middle of the park, next to a viewpoint over the city (see if we will still see this far once the trees have turned green ...), …
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Grotto of the Immaculate Conception
Highlight • Religious Site
The Lourdes grotto is located at the intersection between the Glaaierweg and a field path. The grotto has been beautifully restored. There are benches, flowers and candles. It is probably …
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Wonck Caves
Highlight • Cave
The caves of Wonck are located on the slope just above the village of Wonck, they are former flint quarries and marl quarries. Nowadays mushroom cultivation still takes place, and one of the quarries is used as an event location.
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