Editing Miranda (moon) (section)

=== Regiones ===
The [[Regio (astronomy)|regiones]] identified on the images taken by the ''[[Voyager 2]]'' probe are named "Mantua Regio", "Ephesus Regio", "Sicilia Regio", and "Dunsinane Regio".<ref name=usgs_ref/> They designate major regions of Miranda where hilly terrain and plains follow one another, more or less dominated by ancient impact craters.{{sfn|Smith|1986|p=60}} Normal [[Fault (geology)|faults]] also mark these ancient regions. Some [[Escarpment|escarpments]] are as old as the formation of the regions while others are much more recent and appear to have formed after the coronae.{{sfn|Smith|1986|p=61}} These faults are accompanied by [[graben]]s characteristic of ancient tectonic activity.{{sfn|Smith|1986|p=60}} The surface of these regions is fairly uniformly dark. However, the cliffs bordering certain impact craters reveal, at depth, the presence of much more luminous material.{{sfn|Smith|1986|p=60}}