The vexing hex-swamps

The hex-based swamp is a variation of the plank puzzle concept proposed by Graham. The hexagonal grid opens up a few more puzzling conundrums for intrepid swamp explorers to deal with, one obvious one being the choice of direction approaching the exit stump. Do you approach from above or from the left? A maze that offers a choice of exit routes is probably offering a white-hole and only one of those exit routes is reachable. If you are inclined to try and work a maze backwards, a white-hole is an extra hurdle to deal with.