The following are maps of the mountain isle caves. Treasure chests and mine spots are NOT and will NEVER be shown. This is to discourage people from hogging them. If you want to know the locations of them, go inside the cave(s) and search for them yourselves. The maps may not be 100% perfect.
Great Circle Cave (Crater Mountain)
Pinnacle-Crater Mountain Tunnel
Triangle Mountain-Crater Mountain Tunnel
Triangle Mountain-Ledge Tunnel
Forgotten Isle Haunted House Maze