This colour-coded topographic image shows Aganippe Fossa, a snaking groove found at the foot of Mars’s giant Arsia Mons volcano. It was created from data collected by ESA’s Mars Express on 13 December 2023 and is based on a digital terrain model of the region, from which the topography of the landscape can be derived. Lower altitude parts of the surface are shown in blues and purples, while higher altitude regions show up in whites and reds, as indicated on the scale to the top right.
North is to the right. The ground resolution is approximately 25 m/pixel and the image is centred at about 3°S/233°E.
[Image description: This colourful rectangle of Mars is bumpy and irregular in the left half, with numerous small mounds clustering together and a number of jagged grooves and ridges seen throughout. The right half of the frame is smoother and marked by zebra-like stripes, a result of windblown dust. A dark scar, reminiscent of a dashed line, emerges from the bottom-middle of the image and arcs round to the middle-right. The image is coloured in hues of blue, green and red to indicate land height. A key shows that lower altitude land is coloured purple/blue, then we move through green and red to the highest altitude land in white/brown.]