Question: What volcano, with a height of nearly 22 km, is the reason scientist believe that the location of the poles of Mars have shifted?
Sentence (from "Alba Mons"): Alba Mons (formerly known as Alba Patera, a term that has since been restricted to the volcano's summit caldera) is an immense, low-lying volcano located in the northern Tharsis region of the planet Mars.
Relevant evidence: No