Seen from a bird’s eye view on Google Earth, the Grand Prismatic Spring in Yellowstone National Park, Wyoming, USA almost appears Photoshopped on first appearance.
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The 370 foot-diameter spring boasts many colours of the rainbow.
Its mesmerising hue is vivid blue in the centre, becomes green towards the edge and then morphs into yellow and fiery orange.
The natural wonder has been attracting visitors for over a century after being discovered in the early 1800’s.
Its magical rings of colour are due to the varieties of pigmented bacteria and microbes that live in the mineral-rich waters surrounding the hot spring.
In fact, the colour of the spring can change with the seasons as the beings within live and die.
As tempting as it might seem to dive into the azure waters, it’s certainly not suitable for a dip.
At the centre of the pool, the water – which boils up from a crack in the earth 121 feet beneath – is so hot it’s sterile.
This is responsible for the bold and clear blue of the spring.
The coolest zone is in the outermost ring of the pool where the temperature is 55 degrees Celsius.
This is home to the most diverse community of bacteria.
The natural wonder is one of the most photographed sights in Yellowstone National Park.
Needless to say it attracts crowds – but also fog on cooler days – so the best time to arrive at the spot is 10am.
The best overhead view can be seen from Fairy Falls overlook.
The area around the Grand Prismatic Spring is devoid of trees and shade so there’s no escaping the sun.
The spring is free to visit 24 hours a day between 20 April and 6 November.
It sits seven miles north of Old Faithful, a famous cone geyser that erupts every 35 to 120 minutes at a height ranging from 80 to 184 feet.
To access the park, you need to buy a seven-day park pass.
Around four million people visit Yellowstone each year.
As well as impressive geysers, you can also see incredible wildlife, waterfalls, lakes, mountains, rivers and more.