You are looking at a torrente here. A torrente is a normally dry river bed.
In the centre of my photo you can just about see the remains of an old bridge that was swept away by a raging torrent almost twenty years ago. Queen Sofía of Spain came to this very spot a few days after the Big Rain in 1988, to see the devastations for herself.
It was obviously not deemed necessary since, to rebuild this bridge.
By the way, three lives were lost at the time, elsewhere on the island (in Portocolom).
The photo was taken near Ca’s Concos d’es Cavallers, Felanitx, Mallorca, Spain. The date: February 19th, 2008. The time was 13:24:19.