Register at the Rinjani Trek Center (CRT) in Senaru (601 m) early in the morning, meet your guide and arrange National Park entry tickets. The RTC staff briefing describes the route details, local cultural traditions and what you might see, and explains rubbish management and safety procedures. The first hours of the trek climb steadily through thick tropical forest rich in flora, bird life and variety of butterflies.

You might see orchid, the long tailed grey macaque monkey-kera and, if lucky, the rare black ebony leaf monkey, known locally as lutung, Rusa dear are forest dwellers are occasionally seen along the trek trail. The smaller barking deer or kijang has an alarm call with a distinct dog -like bark. Rest stops are taken along the way, and in Pos 2 Montong Satas shelter (1.500m) where village stories and local legend are related by your guide. Feature includes the banyan tree bunut ngengkang that look like someone with their legs apart, and the batu penyesalan stone.

You will reach at Pos 3 Mondokan Lolak (2,000m) after about five hours climb from Senaru Crater rim at 2,641m. From the creater rim are sweeping view across to Bali and Mount Agung down to Segara Anak Lake (2.000m) within the Rinjani crater Mt Baru (2,352) is and island in the lake an an active volcano, last erupting dramatically in 1994. After enjoying the view, the trek proceeds for a couple of hours down the trail to the Crater Lake where the rest of the day is spent relaxing and swimming. There is plenty of time to explore the pilgrimage hot springs, said to have healing powers Camp by lakeside, enjoying dinner followed the night sounds.