The Riffelsee, is a small lake at just over 9000'. On the left edge of the enclosed picture you see the Riffelberg, the crag traditionally used by guides to practice rock climbing skills with their clients. On the Matterhorn the right hand ridge is the Hornligrat, the route of the first ascent. The left hand ridge is the Furrgengrat, the most difficult of the four ridges.
Of course when I get there, the view is liable to be a little different, as it is still snowing in the Alps. The picture below is from Cervinia, a town on the Italian side of the Matterhorn, and at 6,851' it is well below the Riffelsee.
