Owl’s Crack25m HVS 5b ***. Michael Barnard (unsec). 31 Jul 2013. An excellent climb, sustained with the crux at the top. Climb the lower section of Bogendreip Buttress to an obvious big jug on the left, make a tricky move left into the Crack o' the Mearns corner, then move up to finish up the hanging crack immediately to its left. Note: The tricky move left previously climbed by Julian Lines (SMCJ 2004).