This is an image of Artemis Corona.
NASA
Venus Coronae
The feature of Venus' topography called a "Corona" is a deep, curving, trench surrounding an elevated plain. Coronae is the plural term for corona.
This is an image of Artemis Corona which is found on Aphrodite Terra, and is the largest of the coronae. This coronae shows a nearly circular trench (Artemis Chasma) that surrounds the corona with a diameter of over 2000 km (1250 mi). The corona rim can rise as much as 6000 m (20,000 ft) above the bottom of this trench, and the interior is a plateau standing 2000 m (6500 ft) above the surrounding plains.
Based on the similarity of the shape of the trench to the shapes of island arcs (a part of the subduction process) on Earth, coronae have been identified as a potential location of subduction on Venus.
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