Apavatn is a lake in southwest Iceland. With a surface area of around 13 km² it is much larger than the neighbouring lake of Laugarvatn, which lies to the north of Apavatn. Apavatn is renowned for its good fishing, especially trout.
Wikipedia https://en.wikipedia.org/wiki/Apavatn
Coordinates 64°10'22.481" N -20°39'38.317" E