Question: How old is the currently active shield volcano located in the Kaʻ ū Desert?
Sentence (from "Kaʻū Desert"): The Kaʻ ū Desert is a leeward desert in the district of Kaʻ ū, the southernmost district on the Big Island of Hawaii, and is made up mostly of dried lava remnants, volcanic ash, sand and gravel.
Relevant evidence: No