It looked like a lot of volcanic leftovers. We have similar area east of us in Almeria, the only European desert where they filmed a bunch of Spaghetti Westerns because it looked so bleak and barren. I guess there must be a part of Gran Canaria with more trees but it wasn't on the part of the island we were at.
Thanks. I figured it was largely dry, so wildfires don’t surprise me.