Return to the same Martian hill
Follow the famous face-like landform from Viking to later orbital observations and test how illumination, resolution and viewing geometry shape a familiar outline.
What to keep in mind
These are separate observations, not a sharpened version of one exposure. HiRISE's colour detail is processed imagery, while terrain-model animations are reconstructions and are not included as footage.
Follow the familiar features
Which face-like details in the Viking view remain as terrain in the later high-resolution image? Mark the features before naming what they resemble.
Put the hill in context
Use the wider THEMIS scene to find neighbouring eroded hills. Which features of the famous landform also appear in its surroundings?
Compare another return
What does the 2023 HiRISE observation add about slopes and texture? Separate new camera detail from differences caused by colour presentation or illumination.