The majestic Segara Anak lake filling the caldera of Rinjanivolcano. The cinder cone is Gunung Baru Jari (new mountain). The lakecovers an area of 11km2 and its volume was before the eruption
estimated at 1.02km3. This is probably the largest hot volcanic lakein the world. The lake elevation is 2000 meters ASL.
Segara Anak is a crater lake contained within Mount Rinjani on the island of Lombok in Indonesia. The name Segara Anak means child of the sea given to the blue color of the lake reminiscent of the sea. The lake is heated, so its temperature is 20-22 °C, about 5-7°C above the expected temperature for a lake in that altitude. Atthe west end of the lake is the volcanic cone Gunung Baru, giving to the lake a crescent shape.