Plumb the depths of Siberia's astonishing abyss at Lake Baikal

RUSSIA // Ancient Baikal has stirred and sustained nomadic tribes, revolutionaries, artists and adventurers for centuries. Plummeting 1642m (5387ft) from its icy waves to its almost unfathomable bed, it's the deepest lake on the planet. Whether you swim in it, sail on it, swallow it (the waters are said to have magical properties), or just admire it from its 2000km (1240 miles) of shoreline, you'll find 'the Sacred Sea' to be nature at her most astounding.