Farmers in Lanzarote use volcanic ash for crop cultivation

Farmers in the La Geria region of Lanzarote use a layer of volcanic ash to retain moisture. This technique allows for plant cultivation in a dry volcanic landscape.

This system uses material known as picón, lapilli, or rofe. This layer limits water evaporation and allows for the use of small amounts of rainfall. This method has been used since the 18th century following the Timanfaya eruptions.

Scientists from CSIC and an international delegation visited the island to study these traditional farming techniques. Farmers dig conical pits in the ash to reach the soil.