The humans who are exploring 'Mars' already

A group of scientists clad in spacesuits trudge across the bleak red terrain, occasionally pausing to take rock samples or map the landscape.
After their mission is complete, they will return to their cramped habitation module, where they live a spartan existence with limited water, electricity, food and oxygen, a vast distance from home.
But these amazing pictures are not from the latest sci-fi thriller set on Mars, but were taken in the deserts of Utah, in the Western United States.
The 'astronauts' are a group of volunteers who are helping to discover ways to investigate the feasibility of a human exploration of Mars and use the Utah desert's Mars-like terrain to simulate working conditions on the red planet.