Grotte di Roda de Berà

In the municipality of Roda de Berà, in the comarca of Tarragonès, 6 cavities are known: 5 caves and 1 pit. Together they total 236 m of passage and reach a maximum depth of 61 m. The lithologies present are limestone, in 5 cases, and conglomerate, in 1.

Cova d'en Merla is the most notable cavity, with about 180 m of passage and 61 m of depth, located on the western slope of the Serra Llarga. It has been known since the 13th century, with visits in 1906 and 1908 and a detailed survey in 1972. Other cavities in the municipality are Avenc d'en Floresso, in the Bonastre massif, with an entrance of 0.8 x 0.6 m, a descending chamber and a shaft with a drop of 2.5 m; Cova d'en Duran, about 20 m of passage and a single sloping chamber; Cova de la Coma d'en Gall, with a wide entrance of 6 x 2 m opening to the SW and a short impenetrable gallery at the back; and Cova del Bon Joan, with an entrance of 4 m and a maximum height of 1.80 m.