As meganerd describes make a rising traverse about 100-125feet and approach the lip of the treacherous gulch. Protection is hard to place but enough spots exist to get into the gully laterally arriving at a small landing immediatley below belay slings high on the far side. Climbing out is relatively simple compared to going in. Follow meganerd's directions from there. On return, rappel into gully and climb out using an inverted "V" route landing you about 100 feet above trail end. Route is definitely a dry weather route but is very doable even in large climbing boots and a full pack. Going down and back up the 1500' would be less exciting and somewhat of a tiresome burden. See Beckey's route guide for details but unlike his advice, use a rope.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe