That is the common name in Spanish for the species Fistulina hepatica. It grows on the trunks of trees, and a lot. This specimen weighed more than two kilos. I found it in a tree during one of my walks across the PRSE of Madrid. I got back just two days later, to take a photo, and someone had torn it off and it dropped to some low branches.
Or maybe it fell by itself due to its weight?.