From the flange in the sidewall past a slot.

ClimberDateStyle
Robin Nichols 04/Apr/15 Sent O/S
with Jim
Hidden 30/Jul/13 Sent
Thunderthighsontheloose 24/Feb/13 Sent
Mike_Hayes 24/Feb/13 Sent
Voting
High f6A
Mid f6A
Low f6A
High f5+
Mid f5+
Low f5+
High f5
Mid f5
Low f5