Mount Mulanje is a mass of granite rising almost sheer from the tea plains of southern Malawi to 3,002 metres, an island-mountain with a rolling plateau on top and the longest unbroken rock wall in Africa on its side, and its highest summit is named Sapitwa, which means don't go there. The massif stands alone, wringing more than 2,500 millimetres of rain a year out of the air against a thousand on the plains, so that it makes its own weather and its own streams, and the tea bushes carpeting its foothills descend from some of the first tea grown commercially outside Asia, planted here in the late 1800s. Most walks begin at the Likhubula gate, and the climb is a day up forest and rock to the plateau at around 2,000 metres, a kilometre above the plain, where grassland rolls between granite domes and the streams slide over bare slabs into cold, clear pools, swum in after the climb. From the Chambe basin the plateau's edge rears up as a single sweep of granite more than 1,700 metres high, the west face of Chambe, the longest unbroken wall on the continent.
The plateau is crossed between plain wooden huts, each with a fireplace and a watchman, spaced a day apart, and stepping out at dawn puts you on a world floating above a sea of cloud that fills the plains below. Sapitwa is the last climb, up boulder-choked slopes into a trackless maze of granite that guards the top and earns the name; the summit is held sacred, and when cold mist smothers it tradition blames Napolo, a great serpent said to travel underground between Mulanje and the neighbouring mountain, dragging storms behind him, and people have vanished on the top. The cool dry heart of the year, from May to August, brings clear skies and the sea of cloud at dawn; the rains from November close much of the plateau. Mulanje is a mountain with a warning in its name, and the plateau below the warning is the finest walking in Malawi.