Grotte di Tivenys

Tivenys, a municipality in the Baix Ebre, has 11 catalogued cavities: 8 pits and 3 caves. The total recorded development is 1,772 m and the maximum depth reached is 180 m. The dominant lithologies are dolomite, present in 9 cavities, while limestone appears in 2.

Among the cavities most notable for their length are the Avenc del Cim de l'obaga del Pollo, with 754 m; the Avenc del Camí de Xàquera, with 530 m; the Avenc Solsona, with 110 m; the Cova-avenc del Cim de l'obaga del Pollo, with 90 m, and the Avenc de Boca de Foix, with 86 m. As for depth, the Avenc del Camí de Xàquera reaches 180 m; the Avenc del Cim de l'obaga del Pollo, 141 m; the Avenc Solsona, 62 m; the Avenc de Boca de Foix, 37 m, and the Avenc de Palanques, 35 m.

The Avenc del Camí de Xàquera was discovered and cleared by the GIE – CE Gràcia around 1972 or 1973, and in 2014 the UEC de Tortosa reached -180 m. The Avenc de Boca de Foix was explored in January 1971 by the GIE del Club Excursionista de Gràcia and re-surveyed in 2019 by Vicent Barraquet. The Avenc de Palanques was explored on 3 February 2013 by the UEC Tortosa.