3 day 2 nigth

Trekking Rinjani
and you can see the beautiful view
You can see the beauty of Segara Anak Rinjani Lake and an activity you can do is fishing
To the west of the Rinjani cone there is a caldera with an area of ​​around 3,500 m × 4,800 m, extending to the east and west. In this caldera there is Segara Anak (segara = sea, lake) covering an area of ​​11,000,000 square meters with a depth of 230 m. The water flowing from this lake forms a very beautiful waterfall, flowing through a steep ravine. In Segara Anak there are many goldfish and tilapia so they are often used for fishing. The southern part of this lake is called Segara Endut.

On the east side of the caldera there is Mount Baru (or Mount Barujari) which has a crater measuring 170m×200 m with a height of 2,296 – 2376 m above sea level. This small mountain last erupted on 25 October 2015 and 3 November 2015,[3] having previously erupted in May 2009 and in 2004.[4][5] If the 2004 eruption did not claim any lives, the 2009 eruption claimed 31 indirect lives, due to flash floods in the Kokok (River) Tanggek due to the pressure of lava towards Segara Anak.[6] Previously, Mount Barujari was recorded as having erupted in 1944 (at the same time it was formed), 1966 and 1994.
Stratigraphically, Mount Rinjani is underlain by Neogene clastic sedimentary rocks (including limestone), and local rocks by Oligo-Miocene volcanoes. Quaternary volcanoes themselves mostly produce pyroclastics, which in some places are interspersed with lava. The lithology is known to record some of the eruptions in history. Since 1847 there have been 7 eruptions, with the shortest period of rest being 1 year and the longest being 37 years.

As with other volcanoes, Koesoemadinata (1979) stated that the activity of the Rinjani volcano after the formation of the caldera was rebuilding. The activity is in the form of effusion which produces lava and explosives which form the deposition of loose material (pyroclastic). Lava is generally black in color, and when it melts it looks like foam. The eruption after the formation of the caldera was relatively weak, and the lava released by the cones of Mt. Barujari and Mt. Rombongan was relatively more alkaline than the lava of other volcanoes in Indonesia. The danger of hot clouds forming when the eruption peaks is very small. Eruption material is generally deposited in the inner part of the caldera only.