US, French and German volunteers have been living on freeze-dried food and trying to avoid personal conflicts on the red planet-like slopes of Mauna Loa
Six scientists are close to wrapping up a year of near isolation in a Mars simulation on a Hawaii mountain.
The scientists are housed in a dome on Mauna Loa and can go outside only in spacesuits, the Hawaii Tribune-Herald reported.
They manage limited resources while conducting research and working to avoid personal conflicts. Communication is delayed by 20 minutes, the length it would take to relay messages from Mars.