The subterranean boat trip spans approximately 700 meters, making it the longest of its kind in the world.
The cave was utilized by Paleolithic humans as a shelter approximately 8,000 years ago.
The temperature remains stable at 10°C, regardless of surface weather conditions.
The river flowing through the cave, the Rubicon, is a tributary of the Amblève.
The 'Cathedral' is one of the largest chambers, measuring 40 meters high.
The caves serve as a protected habitat for several endangered species of bats.
Les Grottes de Remouchamps feature an underground river tour recognized as the longest subterranean navigable waterway open to tourists globally. The cave system is formed by the Rubicon River, which runs through the limestone galleries before exiting into the Amblève River. Visitors navigate the initial chambers on foot before boarding electric boats for a 700-meter journey through the flooded sections. The cave maintains a constant internal temperature of approximately 10 degrees Celsius year-round. These caves are significant for their diverse population of hibernating bats, including species like the Greater Horseshoe bat. Stalactite and stalagmite formations, including the Cathedral chamber, are highlights of the walking path. The facility has been a tourist attraction since 1912. It is situated in the Ardennes region of Belgium near the town of Aywaille.
The Cathedral chamber, where lighting highlights the scale and crystalline formations.
Bring a warm jacket or sweater regardless of the outside temperature.
Wear shoes with a good grip as the interior walkways can be damp and slippery.
Book tickets in advance online during weekends and holiday periods to ensure availability.
Do not attempt to walk through the water sections; the boat ride is mandatory for the flooded portion of the route.
Open daily during summer; typically closed on Mondays outside of holiday periods.
Do not touch the rock formations, as oils from human skin can disrupt their growth; do not use flash photography near the bats.
