Hellas Planitia with Dao- Niger and Harmakhis Vallis An ancient but also todays icy overhead view of the north eastern part of the Hellas Planitia, the largest crater on Mars. 1600 km across and 8180 meters deep. In the north the eroded volcano Hadriaca Patera lays on the rim of the bassin, and from north to south the large valleys Dao, Niger and Harmakhis Vallis were once shaped by water coming from the Hesperia Planum.. Ice and water were present in the past, but nowadays in winter CO2 and waterice can be seen in this basin. Resolution 1024x768 1/128 degree MOLA data Height model made with 3DEM 17 and used as is. |