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Eco-photos of the week: May 29-June 4

A participant in the Tough Mudder endurance event takes on the 'Greased Lightning' water slide, which is just one of the 23 challenges featured on the 10 mile course billed as "Ironman meets Burning Man."

Photo: ZUMA Press

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'Tough Mudder' course

A participant in the Tough Mudder endurance event takes on the Greased Lightning water slide, just one of the 23 challenges featured on the 10-mile course billed as "Ironman meets Burning Man."