The equatorial ridge is the tallest mountain feature on Saturn's moon Iapetus.

It is 20 km (12 mi) high, and is the third tallest mountain structure in the Solar System.

There are bright areas on the sides of the equatorial ridge near Iapetus' bright trailing hemisphere, which were already visible in Voyager 2 images appearing like mountains and were nicknamed the "Voyager Mountains".

Peaks in the ridge rise more than 20 km above the surrounding plains, making them some of the tallest mountains in the Solar System.

[2] Within the bright regions there is no ridge, but there are a series of isolated 10 km peaks along the equator.