Bachalpsee

Bachalpsee or Bachsee is a lake with an area of close to the "First" (which can be reached with a cable car) above Grindelwald in the Bernese Oberland, Switzerland. The lake, located at an elevation of , is split by a natural dam, the smaller part of the lake being lower.
The lake is featured in Gmail as part of its mountain theme background (as of 2013).