FATMAP difficulty grade
At the top of Luttersee T-bar head right to the ridge, you may need to walk 10/20 metres.
On the top of the ridge you have the slope on your right (north-east).
It is up to 45 degrees, maybe even more.
After about 300 metres you get on a kind of wide shoulder.
Continue straight down and look always forward to avoid the few cliffs which may force you to climb back a little via a walk through the deep snow.
Here again the slope gets up to 45 degrees, but you don't have to go the whole way down.
You can cross above the cliffs on your left in the direction of Andermatt, cross "Gurschenbach", "Mettlen" and meet the bottom of the black slope "Gurschen-Andermatt". If you cross between the cliffs, you must turn to the left below them and head to Andermatt, otherwise, as for the "Geissgrat" route, you will finish at the river (Unteralpreuss) with no way to cross it. "Gemsplangge" is quiet exposed to avalanches for it is steep, faces south-east (gets sun already in the early morning, which is especially critical from March onwards), and after the shoulder the terrain changes steepness which is a problem for avalanches too.
It is often skied, thus the snow layers are mixed, but after a consequent snowfall don't go there for at least the first few days! Dwarf alders aren't any guarantee of stable snow.
Before they are completely covered with a good layer of snow, the snow may slip even more easily between their branches and initiate an avalanche!