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This is a list of named geological features on Mimas. Mimasian geological features are named after people and places in Arthurian legend or the legends of the Titans.
Mimasian chasmata are named after locations in Arthurian legend and the legends of the Titans.
| Chasma | Named after |
| Avalon Chasma | Avalon |
| Camelot Chasma | Camelot |
| Oeta Chasma | Oeta |
| Ossa Chasma | Ossa |
| Pangea Chasma | Pangea |
| Pelion Chasma | Pelion |
| Tintagil Chasma | Tintagel |
Mimasian craters are named after characters in Arthurian legend.
| Crater | Named after |
| Accolon | Accolon |
| Arthur | King Arthur |
| Balin | Balin |
| Ban | Ban |
| Bedivere | Bedivere |
| Bors | Bors |
| Dynas | Dynas |
| Elaine | Elaine |
| Gaheris | Gaheris |
| Galahad | Galahad |
| Gareth | Gareth |
| Gawain | Gawain |
| Gwynevere | Guinevere |
| Herschel | William Herschel |
| Igraine | Igraine |
| Iseult | Iseult |
| Kay | Kay |
| Lamerok | Lamerok |
| Launcelot | Launcelot |
| Lot | Lot |
| Mark | Mark |
| Merlin | Merlin |
| Modred | Mordred |
| Morgan | Morgan le Fay |
| Palomides | Palomides |
| Pellinore | Pellinore |
| Percivale | Percivale |
| Tristram | Tristram |
| Uther | Uther Pendragon |