Aquafan
Gradara
Onferno caves
Mondaino
Montebello

Park Oltremare

Aquarium Le Navi
Mirabilandia
Fiabilandia
San Leo
Onferno caves

The Onferno Caves are the only natural caves in the Conca Valley. The caves' narrow tunnels were formed by a small stream that over millions of years carved into the mass of chalk on which Castrum Inferi once stood. Although they do not extend very far, the caves are quite awesome and extremely interesting from both a speleological and faunistic point of view. It is possible to visit the caves. The Onferno Caves and the surrounding area have been protected and an oriented nature reserve since early 1992.

Web Site: www.grottedionferno.it
 
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