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The walls of Thira seen by Spirit from the summit of Husband Hill
Thira is a crater on Mars. It is located within the larger crater Gusev. It measures approximately 22 kilometers in diameter and was named after the town of Fira on the island of Santorini in Greece.
- "Thira (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
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