Know what this is OP? Its a ladder, its a ladder that was built by the first guy to climb to the top of devils tower in Wyoming.
Devils Tower is pretty fucking tall op.. it was first climbed on July 4, 1893 by a local rancher on the very ladder you see in those pictures. After all those years some of the ladder still remains.. He built a ladder all the way to the top..
Its my favorite national monument btw very cool to see in person and know they still arent sure how it was created and that there is nothing else on Earth like it..
They arent going to have much trouble climbing over those walls OP...