In reply to charlie 1:
Take a fairly light rack, you'll need some rock gear but more for belays than runners. If you get 6 runners in 60m you're doing well.
Don't pass a good belay, they can be very spaced.
Take tat and a threader.
The crux pitch where you leave the 1st basin is started from an obvious rock rib on the right at the top beneath a "very" obvious smooth icy V groove.
Be ready to climb a long way above gear and for a long day out.