Grand Prismatic Spring in Yellowstone National Park

The Grand Prismatic Spring in Yellowstone National Park, US, is known for its striking coloration and enormous size. The vivid colors in the spring are caused by bacteria, living on the edges of the mineral rich water. The water in the center of the pool looks extremely clear, and has a beautiful, deep-blue color – thanks to the scattering of blue wavelengths – because the water is so hot that’s actually sterile.

By Jim Peaco, National Park Service – http://www.nps.gov/features/yell/slidefile/thermalfeatures/hotspringsterraces/midwaylower/Images/17708.jpg transferred from the English Wikipedia, original upload 1 April 2004 by ChrisO, Public Domain, Link

Continue reading Grand Prismatic Spring in Yellowstone National Park

Advertisements

The River of Five Colors

By Mario CarvajalOwn work, CC BY 3.0, Link

Caño Cristales is a Colombian river located in the Serrania de la Macarena province of Meta. The river is commonly called the River of Five Colors or the Liquid Rainbow, and is even referred to as the most beautiful river in the world due to its striking colors. The bed of river in the end of July through November is variously colored yellow, green, blue, black, and especially red, the last caused by the Macarenia clavigera (Podostemaceae) on the bottom of the river.
Continue reading The River of Five Colors

Travertine terraces views from around the world

Travertine is a form of limestone deposited by mineral springs, especially hot springs. Travertine often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and even rusty varieties. A travertine terrace is formed when geothermally heated alkaline waters emerge to the surface and form waterfalls of precipitated carbonates.

Krka National Park in Croatia

Krk waterfalls.jpgBy Version13 at English Wikipedia – Transferred from en.wikipedia to Commons., Public Domain, Link
Continue reading Travertine terraces views from around the world

The Glacial Moraine Lake

By DrwilsonjjjOwn work, CC BY-SA 3.0, Link

Moraine Lake is a glacially fed lake in Banff National Park, in Alberta, Canada. The lake, being glacially fed, does not reach its crest until mid to late June. When it is full, it reflects a distinctive shade of blue. The color is due to the refraction of light off the rock flour deposited in the lake on a continual basis.
The area around the lake has several walking/hiking trails. That view of the mountains behind the lake in Valley of the Ten Peaks is known as the “Twenty Dollar View”, as Moraine Lake was featured on the reverse side of the 1969 and 1979 issues of the Canadian twenty dollar bill.

Continue reading The Glacial Moraine Lake

Dust devils

A dust devil in Arizona – By NASA (NASA web page & source file) [Public domain], via Wikimedia Commons

A dust devil is a strong relatively long-lived whirlwind, ranging from half a meter wide and a few meters tall to more than 10 meters wide and more than 1000 meters tall. Dust devils are usually harmless, but can on rare occasions grow large enough to pose a threat to both people and property. Dust devils form when hot air near the surface rises quickly through a small pocket of cooler, low-pressure air above it. A fully formed dust devil is a funnel-like chimney through which hot air moves, both upwards and in a circle. As the hot air rises, it cools, loses its buoyancy and eventually ceases to rise.
Continue reading Dust devils

Beautiful and Dramatic Landscapes on the Isle of Skye

Rock pinnacles of The Storr – By John Allan, CC BY-SA 2.0, Link

The Isle of Skye is the largest and northernmost of the major islands in the Inner Hebrides of Scotland. The island’s peninsulas radiate from a mountainous center dominated by the Cuillins, the rocky slopes of which provide some of the most dramatic mountain scenery in the country.

Continue reading Beautiful and Dramatic Landscapes on the Isle of Skye

Incredible Lava lakes

Lava lakes are large volumes of molten lava, usually contained in volcanic craters. These lakes can be formed from one or more vents in a crater that erupts enough lava to partially fill the crater or atop a new vent that erupts lava continuously for a period of several weeks or more and slowly builds a crater progressively higher than the surrounding ground.

Lava lake in Nyiragongo, in a molten state

By Cai Tjeenk Willink (Caitjeenk) – Own work, CC BY-SA 3.0, Link

Continue reading Incredible Lava lakes