This now works 100% with normal RND elements! It takes LESS CEs and no group elements are used now, just 7 CEs
If you wrap around the map and the way is blocked you will be returned to the other side! This works really well with boulders (you can wrap and push a boulder in one go). There's also an optional pause on the wrap-back, on a large cave you'll want a long pause (to see what is blocking you) and short on a single screen cave.
Level 1 just shows you the wrap-back feature, Level 2 is a dirt-boulder cave which is pretty cool (press up at the start)