Grotte di Tivissa

Tivissa, a municipality in the Ribera d'Ebre, brings together 36 catalogued cavities: 17 pits and 19 caves. The group totals 1138 m of passage and reaches a maximum depth of 74 m. The lithologies present are dolomites (18), limestones (17) and marls (1).

Among the longest cavities are the Cova del Janet, with 130 m of passage at Llaberia, known since time immemorial and of important archaeological and biospeleological interest; the Esquerda Estreta de Mont-redon, of 114 m, found by JM Plana “Bin” and explored by the S.I.E.Tarragona; and the Cova Llúdriga, of about 100 m of passage, with a large circular chamber, reconstructive forms and access via two routes of 3.5 km and 260 m of elevation gain.

As for depth, the Esquerda Estreta de Mont-redon reaches 74 m; the Avenc de l'Espadella, of 42 m, has pits of 12 and 24 m, a chamber decorated with stalactites and a gour, and a point of maximum depth at -42.6 m; the Avenc Pena-roja, of 32 m, presents an entrance of 1 metre by 0.80 oriented to the SE, a pit of 23 metres and a second pit of just over 5 metres; the Avenc Sargantana, of 30 m, of complicated access, was located and explored by the SIRE-Cornellà in the years 1965-66 and revisited in 1982 with the GERP; and the Avenc de la Llamborda, of 22 m, near the Serra d'Almos, was explored on 18 January 1975 by the GE Pedraforca.