El Canal del Emperador (Alpes de Suisse Centrale)

Follow the itinary to Chaiserstuel summit. 
Go down to 2213 where you'll find a first anchor.
Traverse or rappel down then go up to the couloir entry. 

Explanations:

Fifty metres before the Chaiserstuel summit, descend 150 metres down the western face to a flat platform (altitude: 2,213m). From this platform, secure your skis to your backpack and climb 5–10 metres up to the first anchor. From here, you have two options:

 - Abseil three pitches (20m, 25m, and 10m) into the alternative couloir, which you then ascend to reach an altitude of 2,229m. I have not done the abseils myself, so I cannot provide further details.
 - Traverse (slightly exposed but protected by a few bolts). A spacing of 15–20 metres between climbers is reasonable. Use a selection of cams and nuts for additional protection. However, as the rock is crumbly, it is best to avoid falling. This traverse leads to an altitude of 2,229m.

From 2,229m, reattach your skis and negotiate the couloir’s entry. The first section can feel somewhat precarious, but it quickly becomes more inviting. Take care through the initial narrow passage, followed by a second constriction between the rock walls. Depending on snow conditions, the passage may be as narrow as 1.5 metres. However, on the left wall, there is a bolt, allowing you to abseil if necessary.
Complete the descent by reaching the lift, either at an altitude of 1,640m (skins needed) or at 1,196m, the intermediate station.

Disclaimers:

The Outdoor Guide Engelberg classifies this couloir as “extreme skiing.” In our view, El Canal del Emperador serves as an introduction to steep skiing—though the skiing itself is not particularly exposed, the greatest challenge lies in the traverse. The route is classified in the guidebook as SS (Super Schwierig, Very Difficult).

This “topo guide” is, in my opinion, merely an outline. I do not consider myself experienced enough to write authoritative route descriptions, but given the scarcity of information on steep descents in this region, I would love to see more documentation come to light. I am actively seeking projects! If you believe any key details are missing, please comment, and I will update the guide with your contributions.

Questions:

Does anyone have further details on the abseils?

Has anyone skied the variant and would be willing to share additional information?

Are there any similar lines in the region that you would recommend?

I am very curious about the history behind the name—does anyone know more?