Bizarre beta: feet first
Dave Graham on Petrichor 8C (V15) Petrichor 8C is a boulder problem in Rocklands, South Africa, first solved by Dave Graham. What's special about it is that, apart from small crimps and compression climbing, the method of the first ascensionist included a bat hang, i.e. a double toe hook above your head. It's a clear choice when going from two bad opposing holds, which are possible to hold using compression between them, to a jug. It's really hard to let go of one hand, unless you can change it for a foot, for instance using a heel hook, to maintain tension on the other hand. But so long as you squeeze both holds, you can move your lower limbs around, all the way above your head. Once you have two feet toe hooking on a big hold you can basically let go with your hands.