Eco-tourists walk through part of the Cano Cristales in the Sierra de La Macarena National Park in Meta province November 23, 2013. The park is located in the south-east of the Andean nation and the ... more 
Eco-tourists walk through part of the Cano Cristales in the Sierra de La Macarena National Park in Meta province November 23, 2013. The park is located in the south-east of the Andean nation and the river is locally referred to as the "River of Five Colours" for its vibrant colours which can be observed during the transition between the wet and dry seasons every year. Picture taken November 23, 2013. REUTERS/Jose Miguel Gomez (COLOMBIA - Tags: ENVIRONMENT SOCIETY TRAVEL) less 
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Reuters | Photo By JOSE MIGUEL GOMEZ / REUTERS
Fri, Nov 29, 2013 6:18 PM EST