Grotte e abissi nell'unità geologica Muntanyes de Vandellós - Tivissa

The Muntanyes de Vandellós - Tivissa are a unit of the Serralada Prelitoral with 61 recorded cavities: 27 pits and 34 caves. The whole totals 1829 m of passage and reaches a maximum depth of 109 m. The lithologies present are Limestone (34), Dolomite (24) and Conglomerate (3).

These are southern limestone ranges, between the Baix Camp and the Ebre, with a Mediterranean karst furrowed by ravines. Among the cavities most notable for passage length are the Avenc de Vandellòs (225), the Avenc de Coll Balaguer (115), the Avenc de les Codinetes (100), the Cova Llúdriga (100) and the Avenc de l'Espadella (90).

In depth, the Avenc de Vandellòs (109), the Avenc de l'Espadella (42), the Avenc de Coll Balaguer (39), the Avenc de les Codinetes (33) and the Avenc Pena-roja (32) stand out. The Avenc de Vandellòs has been known since time immemorial, with clastic morphology and explorations documented since 1913. The Avenc de Coll Balaguer was explored in May 1963 by Josep Castell and his group from the GES – CMB, and the Avenc de les Codinetes by the ERE of the CEC in 1965.