Boosaule Montes, on Jupiter’s active moon Io, reach up to 16,000 m (52,493 ft) in height. Rather than being built up by volcanic eruptions, like Olympus Mons, they were formed by tectonic activity (more like Mt Everest) generated by enormous stresses in the Ionian crust.

Boosaule Montes is around as high as Everest and K2 on top of each other.