Available Fishing Guide:
Website: Hammer Down Excursions
This is a very difficult hike. It gains 2000 feet of elevation in the first two miles and then loses 1700' . The path down to the lake doesn't have many switchbacks. The last quarter mile there is no trail and you have to walk on, crawl under and hop over logs and avalanche debris. Don't break your ankle -- wear boots with a shank and watch where you put your feet. The black flies will have you for breakfast, lunch, dinner and between-meal snacks.
The fishing is worth it if you bring a float tube or a raft. Lots of 6 - 10" brook trout, some 12", one much larger... I never caught any browns. Pack out garbage and don't leave stuff behind -- especially not food -- and never in the firepit at a campsite! It is beyond discouraging to finally make it to the lake after the tough hike, and find the campsites at the lake full of food cans and wrappers. Be bear conscious!