With a friend. Parked in Glen Tarbert about NM880605. We walked up through forest and a little west to meet a prominent ravine. Went up the east side and after a 90º bend on the south side to reach the Graham Top of Meall a' Chuilinn South Top. Snow was lying quite thick and crisp above 600m. We wondered if we could actually get up Garbh Bheinn, our prime objective, in these conditions. We climbed up to the 773m top Meall a' Chuilinn. Continued to Garbh Bheinn.