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Taupo: The super volcano under New Zealand's largest lake

Stretching 623sq km wide and 160m deep with several magma chambers submerged at its base, Lake Taupo isn't only Australasia’s largest lake; it's also an incredibly active geothermal hotspot. Every summer, tourists flock to bathe in its bubbling hot springs and sail through its emerald-green waters. Yet, the lake is the crater of a giant super volcano, and within its depths lies the unsettling history of this picturesque marvel.

Watch the full documentary Griff's Great Kiwi Road Trip on BBC Select.