The most spectacular and accessible park in the Indonesia archipelago, it lies between 78 54' - 8*13' South latitude and 112*51' - 113804' East Longitude on the globe. The area covers 58.000 hectares of administration of the Directorate General of Forest and Nature Conservation. There are 4 main reserves, namely: (a) the Laut Pasir Reserve (6.290 ha ) : the sea of sand- declared in 19919 as a protection of 10km wide soft bed of the Caldera (96 ha). (b) The ranu Pane - Ranu Regulo l 14 km away from he active Bromo on the southern of the Caldera (c) Ranu Kumbolo Reserve (1,340 ha) The Kumbolo lake is surrounded by a ring of the hill ops and scattered conifers. Both (b) and (c) were established in 1921. (d) the Ranu Darungan Reserve (380ha). was only recently included in October 1982. The whole region stretches 40 km from the north from the to the south and 30 km from East of West.