From the Timmelsbrücke bridge, on the right-hand side of the valley, follow the road to the Timmelsalm mountain pasture (30). Cross the bridge behind the hut onto the left slope and follow the path until it reaches a high plateau up above. Keep on the left side of the valley and ascend a steep path that leads over the ridge, with the Schwarzsee lake (30) behind it. Follow the western shoreline of the Großer Schwarzsee lake, and head (northeast) to a higher altitude as far as the Schwarzwandscharte ridge, marking the start of the glacier (30). Continue (northwards) along the flat terrain that becomes steeper before flattening out as it crosses the Übeltalferner glacier. The route finally descends into a hollow in the glacier across rocky terrain (northeast) and to the right up to the Müllerhütte mountain hut. Shorter route (bypassing the Müllerhütte): after traversing the glacier for about 800 m, turn right over a well-marked rocky ridge and take the trail to the lower part of the Übertalferner glacier, two thirds of the way (i.e., just in front of the Becherfelsen rock). With hardly any change in elevation vis-à-vis the Müllerhütte, head (eastwards) initially across a rocky section covered in scree, then across the glacier as the terrain slopes to the right to the foot of the nearby Bechergipfel summit. The final stretch of the way to the Becherhaus refuge (visible from a distance) is up several steep steps to the west-facing ridge, before arriving at the top of the Bechergipfel. The return from the Becherhaus refuge is across the glacier. From the Müllerhütte, cross over the Übeltalferner glacier to reach the Schwarzsee lake (30); and from there past the Timmelsalm mountain pasture back to the Timmelsbrücke bridge.
Source: Passeiertal Valley Hiking Guide – Heinz Widmann http://passeier.org