On the subject of the moon to give you an idea of the scale of things - here is a view we often see - a full moon. The arrow is the most noticable crater on the moon Tycho with it's huge ejecta plumes radiating outwards.
The central mountain range is 1.5 km high or over 5000' and the ringed area is roughly equivalent to the Mourne Mountains at 2500' high. Now you have an idea of the scale.
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