Thats a big mountain we can see from our house. It's called La Rhune and it's France and Spain. The white that you can see is snow. You can see this mountain from most places around Ciboure and really well from our school yard.
We did a bit of art it looks like a hand is camouflaged on the paper. We found this idea on the internet. It was really good fun. You can do it too by following the instructions on youtube here