Bromo is an active pyroclastic cone of Indonesia forming part of the Tengger Caldera on the island of Java. Its peak is located at 2392 meters above sea level. The volcano is included in the territory of the Bromo Tengger Semeru National Park. The last eruption dates back to November 26, 2011. The name comes from the Javanese pronunciation of Brahmā, the creator god of Hinduism.
Mount Bromo sits in the middle of a plain called the "Sea of Sand" (Javanese: Segara Wedi or Indonesian: Lautan Pasir), a protected nature reserve since 1919. The typical way to visit Mount Bromo is from the nearby mountain village of Cemoro Lawang. From there it is possible to walk to the volcano in about 45 minutes, but it is also possible to take an organised jeep tour, which includes a stop at the viewpoint on Mount Penanjakan (2,770 m or 9,088 ft) (Indonesian: Gunung Penanjakan). The viewpoint on Mount Penanjakan can also be reached on foot in about two hours. Depending on the degree of volcanic activity, the Indonesian Centre for Volcanology and Disaster Hazard Mitigation sometimes issues warnings against visiting Mount Bromo.