Rinjani Mountain is an active volcano with the height 3.726 m, make this mountain became the second highest mountain in Indonesia. Rinjani is located on the North Lombok Regency, West Nusa Tenggara.
There is caldera on the top of Mount Rinjani volcano and there is Lake which is called Segara Anak lake, this lake is the 2.000m height from sea level with the wide 11.000.000m2 and depth 230m, the beautiful waterfall just in the other side of this lake. There are also hot springs on this caldera.
There is also a small volcano on the east side of the caldera which is called Gunung Baru Jari