SDS to the rear of the Vertex block is a small fin shaped block, the right side of the central wall (facing away from the Garburn Pass) is a surprisingly tough cookie.

John Kettle 02/Sep/12 Sent
High f6C+
Mid f6C+
Low f6C+
High f6C
Mid f6C
Low f6C
High f6B+
Mid f6B+
Low f6B+