From the Bombi highway summit drive up the logging road to the "Last Chance" geocache.
The route from there is a very old road that is now a very rough washed out quad track with lots of water running on it.
I'm no quad expert but I'd rather walk when the track gets that rough ... the ATV types will make up their own mind when they see the rough stuff.
Its a nice walk (roughly an hour or a little more) zigzagging up the hill and a little bit down the other side right to the cabin.
There may be quad access from the Erie side but I know nothing about it.
Grassy Hut