Sierra Buttes, Sea Lion Buttress, 1981. The Sierra Buttes may deserve more attention from climbers. In May 1981 Joe Kiskis, Tim Butler and I climbed the northwest buttress of the highest tower in the southern group that is prominent from Highway 49. This was an enjoyable 10-pitch climb on dense metavolcanic rock that turned out to be quite solid. (5.6 to 5.7 with some 4th Class.)

Bob Grow, Unaffiliated