The Beaver Brook Shelter is the best shelter of its kind I've seen to date. Very solidly built, excellent floor, lots of little features, and a fantastic view to boot.
Plodding towards the summit
As we crossed into the alpine zone, we heard a large helicopter approach... and approach... and approach... I ran up ahead over a rise to see if perhaps there was a rescue in progress.... and a lone Army Blackhawk helicopter glides into view only a few 10s of feet off the ground! No idea why they were here - there wasn't anybody up here but us. Training exercise, perhaps? They hovered next to us for a long time (as you can see from my pictures) and then slowly flew off to the southwest. Interesting.