Mount Sundoro and Mount Sumbing are one of an active stratovolcano in Central Java, Indonesia. Parasitic craters and cones are found in the northwest-southern flanks; the largest is called Kembang. A small lava dome occupies the volcano's summit. Historical eruptions mostly mild-to-moderate phreatic eruptions had occurred.Mount Sumbing, which crater lake at its top, is natural boundary of the regencies of Temanggung, Banjarnegara and Magelang. The longan fruit (Euphoria longata), famous for its delicate taste, gross on the slopes of Mount Sumbing.
Mount Sundoro is situated on the boundary of the Temanggung and Wonosobo regencies, in the Dieng Mountain area. The Dieng plateau, with an average elevation of 2050 m and a temperature that ranges between 13 and 17oC not only possesses unique natural beauty, but is also a storehouse of archeological remains consisting of a complex on temples with names of wayang figures such as Puntadewa Temple, and the temples of Bima and Arjuna.
Both of these mountain are bold challenge for climbers to reach the second highest peak in Central Java. The summit of Mt. Sumbing is unique. Coming up from Base camp Cepit, Parakan, the mountaineers shall arrive in the rocky calderas. With many salfataras where sulfuric gas continuously blows. The last climb to the top, is thru narrow strenous stony path. It needs energy and bravery. At last, after a normal trekking of 8 hours, here it is ………. the peak of Mt. Sumbing, with its exotic panorama. (Sumbing means harelip).
Before climbing be sure of the supply, especially water as there is no spring along the trek. Usually it starts at 9.00 p.m., so at about 05.00 a.m., early in the morning, at sunrise the top of Mt. Sumbing is reached.
All trekkers are requested to honor local customs which are positive, among other: Don’t ruin the trees. Don’t throw garbage. Be careful when make fire. Be polite, don’t complain too much. Don’t urinate at certain places etc.
