The fabled Ijen Plateau is a vast volcanic region dominated by the three cones of Ijen (2368m), Merapi (2800m) and Raung (3332m). Virtually everyone comes purely for Ijen – to hike up to its spectacular sulphur crater lake, and to experience the unworldly sight of its 'blue fire' phenomenon.
However, the rest of the area is also worth exploring, and its sweeping vistas combined with a temperate climate make the plateau a great base for a few days. Threaded with streams and gurgling with hot springs, it's a beautiful, forested alpine area, with rubber and clove groves, cloud-soaked passes and evocative shade-grown coffee plantations. Along with the plantations and their company kampung (villages), there are a few isolated settlements.