Few isles tempt the imagination with the lure of adventure quite like the wild land of Sumatra. An island of extraordinary beauty, it bubbles with life and vibrates under the power of nature. Eruptions, earthquakes and tsunamis are Sumatran headline grabbers. Steaming volcanoes brew and bluster while standing guard over lakes that sleepily lap the edges of craters. Orang-utan-filled jungles host not only our red-haired cousins, but also tigers, rhinos and elephants. And down at sea level, idyllic deserted beaches are bombarded by clear barrels of surf. As varied as the land, the people of Sumatra are a spicy broth of mixed cultures, from the devout Muslims in Aceh to the hedonistic Batak Christians around Danau Toba and the matrilineal Minangkabau of Padang. All are unified by a fear, respect and love of the wild and wondrous land of Sumatra. Danau Toba has been part of traveller folklore for decades. This grand ocean-blue lake, found up among Sumatra's volcanic peaks, is where the amiable Christian Batak people reside. The secret of this almost mythical place was opened up by intrepid travellers years ago. While these days Tuk Tuk – the knobby village on the lake’s inner island – is on the beaten Sumatran overland path, it's still one of the undisputed highlights of central Sumatra.