rinjani 4dMount Rinjani, at 3,726 meters (12,224 ft), is Indonesia's third-hhest mountain and the country's second-hhest volcano. The summit of Lombok is a dormant volcano, but Gunung Baru Jari,4D 3N Rinjani Trekking Tour Itineraries. Start Trek : Via Sembalun. End Trek : Via Torean. Hhlhts : Sembalun Rim, Rinjani Summit, Lake and Hot Spring Water, Torean