i thougtht the arete is combination blocks and the thin crack on the inside is toys in the attic. i have climbed both and they are AWSOME. that is one of my favorite areas at smith. the thin seam on the other wall is awsome too, i can't recall the name of it.... someting about not pausing.... the only thing that sucked was the BAT IN THE HUGE FLAKE that i wanted so bad. i fell at the bat but eded up sacking up and pulling throught the flake bat and all. all i could think about was rabies and how i didn't want shots in my tummy