Tui Regio (located at 20°S, 130°W) is a region on
Titan in the southwest corner of
Xanadu, named after Tui, a Chinese goddess of happiness, joy and water. Tui appears to lack the erosion channels that mark other highland regions on Titan, suggesting it may be geologically young. Patterns resembling lava flows have also been observed, suggesting
cryovolcanism.
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