1. At 1,943 feet deep, Crater Lake is the deepest lake in the United States and one of the ten deepest lakes in the world! I’ve checked several sources and sometimes Crater Lake is the 10th largest and sometimes it’s number 9 or 11. It all depends.
Wizard Island is a cinder cone that erupted after Crater Lake began to fill with water. It is one of two islands in Crater Lake. Do you know the name of the other island? Phantom Ship is the other.