Mount Bromo is an active volcano in East Java and one of Indonesia's most iconic landscapes — a smouldering crater rising from a vast caldera sea of ash known as the Sand Sea, framed by the towering rim of the Tengger massif. Watching the sunrise from the viewpoint at Penanjakan as light slowly reveals the volcanoes through layers of mist is an experience etched into the memory of everyone who witnesses it. The short hike across the Sand Sea to the crater rim, with sulphurous smoke billowing from below, is one of Java's great adventures.