>>42594158I think the best you can do for 2D games is to have the path to it hidden behind a roof or a treeline to obscure the fact that you can actually walk there.
Pic related is the first example that sprung to mind. You can walk behind the southern house to get to the eastern ledge. It's more obvious due to the berries and grass present there, but you could imagine how that could be used to hide a cave or area by using less obvious terrain.
