On the other side of the hill, where the tourist boat emerges into the sunshine, other divers have had more luck. At the beginning of the 60's divers discovered an archeological treasure trove on the riverbed. Study of the origins and age of the various pieces suggests that the caves of Han were one of the principle places of worship in Western Europe in the protohistorical period. Marc Jasinski has spent the last 35 years carrying out underwater archeological research. Two centuries ago, the inhabitants of the village began to see that their cave represents a good source of income.
Visitors come from Brussels and even further afield to see the caves.
At least to see the first couple of hundred meters of the caves and by boat. No-one dare venture further into the unknown, where the huge unstable rocks present an uninviting picture. The villagers, however, push forwards. Eventually they discover the magnificent Dome Room and the Arms room. Further progress is rendered impossible by the river which blocks their path.