Grotte di Mediona

Mediona, a municipality in Alt Penedès, brings together 27 inventoried cavities: 18 caves and 9 pits. The group totals 1015 metres of surveyed passage and reaches a maximum depth of 23 metres. All the cavities develop in limestone.

Among the most significant cavities are the Coves de Santa Anna, with 310 metres of passage and 23 metres of total elevation change (+11/-12), at the foot of the Serra de les Clivelleres, with access from the BP-2126 road; the Cova del Bolet, with 225 metres of passage and an approximate elevation change of -10 metres, with three entrance mouths; and the Avenc Nº1 de Can Verdeguer, a fissure 22 metres deep with three mouths, shafts and a ramp, explored in 1954 and 1973, where beetles, caddisflies and springtails have been recorded.

Other cavities are the Cova de la Jeta, an interstitial cavity with two mouths at the Fondal de Valldellós, an eremitic-cultural site with prehistoric and early Christian remains; the Forat de la Boira, a small interstitial cavity with 43 surveyed metres and three entrances; the Avenc Nº2 de Can Verdeguer, 13 metres deep; and the Avenc de Clivelleres, 12 metres deep, documented by Virella (1978), Rafecas (1995) and Montse Mañosa and Jordi Navarro (CEC) in 2020.