Mr. Moore - Very good basic explanation. I agree with most of your post, but I would consider the Sunshine Route more technical than Cooper Spur. Depending on the year, navigating through the crevasses can be tricky. Cooper Spur is very steep, but straight-forward. I would rather descend Cooper Spur (being very careful at the top) with a heavy load or injured climber than zig-zag my way through crevasses & over uncertain snow bridges. I must admit that I was a bit pessimistic at first, but the more I learn about these climbers the more optimistic I am. Given adequate clothing and a little food, they should be able to make it if they are indeed in a snow cave. Let's hope the SAR guys can get higher on Sunday.