High up at the barren, lunar peak, while the Indians and mules waited behind in the mist, Humboldt in his black boots and yellow velvet jacket stepped to the rim of Pichincha's crater.

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He is believed to be wearing a black hooded Benzini jacket with bright yellow lettering, black ankle boots and a cap with NY on the front.

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But the atmosphere is also very informal: the crowd drinks a lot, champagne corks pop incessantly, and many seize the excuse for flamboyance with feather boas, velvet zoot suits and leopard-print fedoras, while one prominent Melbourne socialite was resplendent in a canary yellow leather suit with matching cowboy boots.

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