Verona Rupes

Verona Rupes is a cliff on Miranda, a moon of Uranus. The cliff face has been estimated to be from 5 to 10 kilometers (3 to 6 mi) high, which makes it the tallest known cliff in the Solar System.

It may have been created by a major impact, which caused the moon to disrupt and reassemble, or by the crust rifting.

Given Miranda's low gravity, it would take about 12 minutes to fall from the top, reaching the bottom at the speed of about 200 kph. Even so, the fall might be survivable given proper airbag protection.