Go to Oberstdorf as described on the main page. Take the cable car to the second intermediate station (Edmund Probst Haus).
- Start altitudes: 1930m
- Summit altitude: 2280m
- Prevailing exposition: E
- Type: 3h on trails
- Protection: none
Effort: 400m gain in elevation
Power: 1 - easy
Psyche: 1 - easy (a bit exposed on the summit)
From Edmund Probst Haus take the trail which runs into direction of Koblat and Engeratsgrundsee. It is a level trail along the Koblat Plateau, always to the south of the Daumen Group main Ridge across which Hindelanger Klettersteig runs. There are two emergency escape routes from the ridge, east and west of the eastern Wengenkopf. You will reach Koblatsee and Laufbichlsee from which the western summit route to Grosser Daumen turns of north. It joins the Klettersteig, traverses Gratkopf and heads along a short exposed section to the flat summit of Großer Daumen.
Alternatively you can head on to Engeratsgrundsee from Laufbichlsee. From there two trails Head up to the Daumen southern ridge where they recombine. They climb steeply upwards to Daumenscharte between Großer and Kleiner Daumen. The final scree scramble leads you up along the Daumen east ridge to the summit. Obviously both routes can be combined to form a loop. I would recommend ascending from Engeratsgrundsee and descending to Laufbichlsee.
Hiking gear is sufficient.