Boulders can be identified as bright, high contrast features with a shadow observed behind these features. Craters were identified as bowl-shaped depressions often seen as a dark circle as light cannot always reach the crater floor and rock exposures were identified as bright high contrast features often larger than boulders but casting little to no shadow.

“It is amazing that we can do this research with such detailed pictures that are so beautiful” says Sarah, “geologically, recently-formed craters which have boulders surrounding the crater are the most fascinating as any samples you collect from such a crater, you can identify where the samples have come from, so when the samples are analysed back on Earth, we could understand the geology of the area better”.