up the stairs into the shell. once you reach the top of the shell cloud will automatically exit out on to the outside structure of the shell. follow it around and take the pathway leading into the cave on the left side.
cloud can scale the walls of this cave by climbing up the two large cracks leading upward. climb up the crack on the left side and choose to jump off to the left once you reach the top.
climb up the crack to the left of this one and follow it all the way up. when you reach the first ledge you will have to jump off either to the 