DW,
You'll love Dusy, I did it with some friends a couple of years ago and I couldn't of made it if one of them didn't bring 2 pair of steel spans with center supports. 1 pair was 6" and the other was 4". Also we used our fire wood to fill in holes and such to get over and then picked our wood back up. If I were to try it again I would bring a heavy solid steel pry bar about 6" long and 1 1/2 inches thick for moving rocks and things.
Study up on this place and read what others suggest to bring. It definitely was a trip of a lifetime.