An incredibly detailed new image of Pluto's mysterious yellow north pole has been revealed.
The stunning image reveals the frozen terrain's strange yellow hue and vast canyons up to 45 miles wide.
Holes which are 45 miles across and 2.5 miles deep are also scattered across the landscape.
These irregularly-shaped pits may represent areas where subsurface ice has melted, causing the ground to collapse.
The enhanced colour image was released by NASA and shows part of Pluto known as the Lowell Regio - named after Percival Lowell whose observatory led to Pluto's discovery.
High elevations show up in a distinctive yellow which is not seen anywhere else on Pluto, while lower elevations look bluish gray.
The yellow hue may be due to solar radiation's effect on the methane ice.
Lowell Observatory team leader Will Grundy said: "One possibility is that the yellow terrains may correspond to older methane deposits that have been more processed by solar radiation than the bluer terrain."
The image was taken by NASA's New Horizons Multispectral Visible Imaging Camera (MVIC), and each pixel shows around 700 metres of Pluto.
Until New Horizons' flyby of Pluto in July last year, the best image of the dwarf planet was small land blurry, and lacked detail.
Earlier this month, scientists revealed that hills of water ice could be 'floating' in a sea of frozen nitrogen on Pluto, moving around like icebergs in the Arctic Ocean.
New Horizons has now moved on and is due to fly past a huge comet known as 2014 MU69 in 2019.
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