you'll have to wait a bit longer. I'm working on a windowskin right now, but I got this crazy idea for how all the caverns can link together
Hopefully have it done tonight.
EDIT: got busy doing other stuff, but hey, at least I got the layout finished, and started on some of the puzzles.
Screenshot #1: Bridge puzzle! There are 6 intersecting bridges that create 5 perpendicular intersections. Each of these intersection has a single bridge piece that can be toggled horizontally or vertically. There are 6 switches spread across the islands. The puzzle can be solved forwards and backwards, and there is an optional chest that is harder to get.