Crutas de Cristal Molinos Spain.

This carst cave close to the Village of Molinos is famous for its large amounts of Helictites which are all over the walls and ceiling. The cave which is part of the "Parque Cultural de Molinos" is unique in Europe.

Links:
Show Caves of Spain: Grutas de Cristal
In Spanish:
GRUTAS DE CRISTAL (TERUEL), PATRIMONIO GEOLOGIA Grutas de Cristal