Mars is universally known as the Red Planet, but a stunning photograph released by US space agency NASA has revealed the complexities of its colour palette.
The striking image was captured by Nasa's Mars Reconnaissance Orbiter's (MRO) camera, which is managed by the University of Arizona, on January 24 and released this week while the planet remains in the grip of a massive sand storm.
The storm has silenced Nasa's solar-powered Opportunity rover but its better-known Curiosity rover has not been affected, continuing to collect data and even posing for a dusty selfie.
The dune was spotted on Mars' Lyot Crater region and researchers suspect it might be made of "finer material" than neighbouring dunes, according to a statement from the space agency.