Perplexible followup

David Millar is kind enough to feature one of my puzzles on his puzzle blog. No, not this one, the other one. It's an old puzzle, and I haven't made any Ice Barns (rules) in quite a while, so I decided to make another one for the sake of new visitors who like the one up on Perplexible. You can find a few more (and, frankly, better) puzzles of this type elsewhere.

This one is both easier and more typical of how solves of the type feel than the Perplexible one. Clicking on the picture opens the puzzle up in the wonderful environment.