The mountain lake is located in the Kaunergrat west of the Pitztal and is a typical moraine reservoir.

The lake fills an extensive valley, the glacier-turbid water looks greenish.

It is framed in the north and west by rugged peaks of the Kaunergrat, particularly striking are Seekogel and Rostizkogel.

In sunny and warm weather, a considerable amount of melt water is supplied by the Seekarles, Loch, and Rifflferner.

An alpine club hut called the Rifflseehütte is located nearby.