Berau is a sprawling East Kalimantan town that serves as a transit point for the Derawan Archipelago to the east and the karst wonderland of Merabu to the south. The main commercial centre on the river is called Tanjung Redeb, which is also used to refer to the town itself. An influx of mine workers and the odd tourist has boosted the amenities, but few travellers hang around here long. Berau is not easily reached by road from the south – most Derawan-bound travellers fly in and arrange transport out.