The 2020 mission of the ExoMars programme will deliver a European Rover and a Russian Surface Platform to the surface of Mars. The ExoMars rover will travel across the Martian surface to search for signs of life. Whitin this framework, Altec has the responsibility to design, build and validate the Rover Operations Control Centre (ROCC) for the ExoMars 2020 Rover. The ROCC will host a team of engineers and scientists who will support the assessment on the data received from Mars and plan next-Sol Rover activities accordingly. A dedicated facility of the ROCC, the MTS (Mars Terrain Simulator), will be used to rehearse, simulate and validate the Rover activities during the operations definition phase, and Ground operator training.