About 1-2 hours west from the center of Madrid. It’s like La Pedriza’s baby brother and has a similar feeling to Joshua Tree. The rock is quite sharp and textured, and lots of variety. It’s a boulderers playground but there are also some sweet sport routes. Don’t be surprised to see something 10 ft tall bolted. Much more info on TheCrag/27Crags
Access is great, the bus can drop you off basically right in front of the park entrance. Approaches are easy, but info online can give inaccurate coordinates. Just walk around enough and you’ll probably find what you’re looking for.