Belle-Roche cave

Belle-Roche cave is a fossil cave and a Middle Pleistocene archaeological and paleontological site located in the municipality of Sprimont, in the province of Liège, Wallonia, Belgium. The cave sits on the right slope of the Amblève valley, south of the village of Fraiture, roughly 2 km from the point where the Amblève meets the Ourthe, near Comblain-au-Pont. The entrance lies at an altitude of about 160 meters, some 60 meters above the current level of the river.

How was the cave discovered?

The site was uncovered by chance in 1980, during blasting work at a nearby quarry. The explosion exposed sediment-filled karst passages that researchers quickly recognized as an exceptionally rich deposit of fossilized remains. The discovery triggered years of excavation and research, carried out by scientific teams until 1999.

Why is this site so significant?

The deposits found at Belle-Roche date from the Early Middle Pleistocene, corresponding to a phase known as the Upper Cromerian — roughly 500,000 years old. This makes the cave the oldest known Middle Quaternary deposit in the country and a reference point of major importance on a European scale. Among the sediments, researchers identified traces of primitive stone technology — worked pebbles, or pebble tools — representing by far the oldest known evidence of human presence in the Benelux region.

What was found inside the cave?

More than 30,000 fossils have been recovered and catalogued from the Belle-Roche sediments, representing about fifty distinct animal species — evidence of an unusually rich and varied fauna from half a million years ago. Alongside the animal bones, researchers also recovered worked flint, confirming human presence in the area at this extremely early date. Notably, some of the flint tools did not originate inside the cave itself: they were carried in by the Belle-Roche karst network, having eroded out of archaeological sites originally located further upstream in the Amblève valley. Together with the tools, tens of thousands of animal bones were swept into the cave and preserved within its sediments for hundreds of thousands of years.

What sets Belle-Roche apart from other sites in the region?

What distinguishes Belle-Roche from other caves and prehistoric sites in the Amblève and Ourthe valleys is the combination of an exceptionally well-preserved fossil fauna with some of the oldest traces of human activity known in the area. Finding both rich paleontological and archaeological material together, dated to half a million years, is rare not only in Belgium but across the wider Benelux region.

Frequently asked questions

Where exactly is Belle-Roche cave located? In the municipality of Sprimont, province of Liège, on the right slope of the Amblève valley, south of the village of Fraiture, near Comblain-au-Pont.

When was the cave discovered? In 1980, as a result of blasting work at a nearby quarry.

How old are the finds from Belle-Roche? The deposits are dated to roughly 500,000 years ago, corresponding to the Early Middle Pleistocene (Upper Cromerian).

What exactly was found in the cave? More than 30,000 fossils representing about fifty animal species, along with worked flint tools evidencing human presence.

Can Belle-Roche cave be visited? The site is primarily a scientific research location of major importance; visitor access depends on current arrangements made by local authorities and the institutions managing the site.