National Park, Chile.
Destination Guide Patagonia » Cascada Expediciones
"The River of Five Colors".. Caño Cristales River, Meta, Colombia (Photography by Mario Carvajal)
rainbow Nacreous Clouds - Iceland - Polar stratospheric clouds or PSCs, also known as nacreous clouds (from nacre, or mother of pearl, due to its iridescence), are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 meters. They are best observed during civil twilight when the sun is between 1 and 6 degrees below the horizon. They are implicated in the formation of ozone holes.
Barron Falls, North Queensland, Australia
Victoria Falls in South Africa