Wood Carving

As I am going to try my hand at a bit of wood carving tomorrow, it reminded me of these amazing carvings I stumbled across on a walk a while ago. I am looking to learn the basics and see how the process works. It must take such skill and patience to do carvings like these, and I love how left among the trees for people to find, its like street art for the countryside. I have seen other carvings like this in different places around different parts of the North, I would love to know who does them!