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The Equatorial Ridge
The Equatorial Ridge is a mountain chain that runs along the equator of Saturn's moon Iapetus. The ridge is about 808 miles long, 12 miles wide, and reaches an altitude of 42,653 feet (13,000 m.).
Although it is unclear how the ridge formed, recent images show tectonic faults running through the ridge, indicating a possible origin by tectonic activity.
The term "equatorial ridge" is just a general name given to the feature because of its geographical location, and as of today it hasn't been given its own proper name.
Check out this image with 3-D glasses!
Detailed close-up of The Equatorial Ridge