A jogger vanishes from the top of Mt. Marathon in Alaska and a witness describes seeing a monstrous, airplane-sized raptor around the time of the disappearance. Could ancient stories of the Thunderbird be true?

With the unsolved case of a missing kayaker at Lake Iliamna, many believe that the legendary Iliamna Lake Monster (or "Ilie") is the culprit. In this huge body of water, a reclusive creature has plenty of room to hide.