| Märjelensee | |||||
| Location: | Aletsch Glacier, Valais | ||||
| Coords: | 46.4408°N 8.092°W | ||||
| Type: | periglacial | ||||
| Basin Countries: | Switzerland | ||||
| Area: | 32ha | ||||
| Max-Depth: | 45m (148feet) | ||||
| Elevation: | 2348m (7,703feet) | ||||
| Pushpin Map: | Canton of Valais#Switzerland#Alps | ||||
| Embedded: |
| ||||
Märjelensee is a lake in the canton of Valais, Switzerland. It formed on the eastern side of the Aletsch Glacier in the 19th century.