For this part I decided I wanted to make use of the upper (technically lower) part of Inverted Stone Tower. There is actually collision normally on all of the ledges up there but obviously no intended way to get up there. There are two soft soil patches on this map. I altered the upper one that is near the three chests. The path for the bean plant is changed so that on it's return trip it makes a detour to one of the upper ledges. The chest is hidden up here and revealed by activating a Sun Switch that is placed on the wall high up.