Parked at end of public road above Ardtalnaig. Took track up through Claggan into Gleann a'Chillene to Dunan, then followed ATV track up Dunan Hill past spring and onto plateau, and so to summit cairn. Descended at first north, then swinging west to descend steeply to Tullichglass - one tricky wall with deer fence to negotiate. Then joined outward track back to end of lane. Sunshine and broken cloud with a fierce cold north-west wind. Snow-cover above 450m, With JK, NP and KM.