Mars Desert Research Station. Researchers simulating living on Mars at the Mars Desert Research Station (MDRS), Hanksville, Utah, USA. This simulated Mars analogue habitat is owned and operated by the Mars Society. It consists of a two-story habitat (the Hab), a greenhouse (the GreenHab), a solar observatory (the Musk Observatory), a robotic observatory, an engineering pod (the RAM) and a science building (the ScienceDome). Tunnels between all of the buildings except the robotic observatory allow crews to travel between the buildings without a spacesuit while they are in simulation (sim). These Australian researchers are at the station as part of 'Expedition Boomerang'. Here, the crew are on a walk to sample the area's soil and rocks. Photographed in 2019.