The lower grey feature is the crater – the grey rock is impact melt breccia – the lava pool that flooded the crater after impact. The upper feature is erosional – river valleys – that only gives the illusion of a crater due to its roughly circular expression combined with the human eye wanting to see patterns. But the rocks there are definitively not crater rocks.
The lower grey feature is the crater – the grey rock is impact melt breccia – the lava pool that flooded the crater after impact. The upper feature is erosional – river valleys – that only gives the illusion of a crater due to its roughly circular expression combined with the human eye wanting to see patterns. But the rocks there are definitively not crater rocks.