The park covers an area of 41,330 ha on the northern part of Lombok. Named after Indonesia’s second highest volcanic peak outside of West Papua, the peak of Gunung Rinjani (3,726m) dominates the landscape. Within the crater is the spectacular Segara Anak lake and the still-active volcano Gunung Baru (2,363m). It is surrounded by a further 66,000 ha of Protection Forest and covers the four administrative district of West, East, north and Central Lombok.
The park ecosystem is in the transitional zone between Asia and Australia (Wallace zone). Average rainfall is about 3,000 mm annually. Gunung Rinjani is rich in a variety of flora, fauna and vegetation types. On the south western side of the mountain is the most eastern extent of primary rainforest in Nusa Tenggara. This gives way to monsoon forest and drier climate in the east, and savannah in the north east. Notable flora includes the everlasting edelweiss flower (Anopheles viscid), tiger orchid (Vanda sp.), alang-alang grass (Imperata cylindrical), cemara trees (Casuarinas trifoliate and Casuarinas occidental).
Trekking Rinjani Indonesia via Sembalun village in east Lombok ascent route to explore Lombok Rinjani mountain start on 1.150 m. above sea level to crater Rim Sembalun 2.639 m, summit 3.726 m, down to the lake and hot spring 2.000 m, up to crater rim Senaru 2.641 m then last day down to Senaru village 601 m.
Trekking Mount Rinjani via Senaru village, North of Lombok ascent route to explore Mount Rinjani Lombok, starting from Senaru village 601 m. asl (above sea level) to crater Rim Senaru 2.641 m, down to the lake and also hot spring 2.000 m, climb up to crater rim Sembalun 2.639 m, climb up to summit 3.726 m, and finally last day down to Sembalun village 1.150 m.