Travels with Gannon and Wyatt : Hawaii.
(Book)

A HIGH-ALTITUDE BLIZZARD, BUBBLING RIVERS OF LAVA, AND BEACHES WITH RAGING SURF; one thing's for sure: The Hawaiian Islands offer no shortage of adventure! Teaming up with fellow explorer, Alana Aukai, thrill-seeking twins Gannon and Wyatt begin an expedition to study rarely visited parts of this Pacific paradise. When an ancient map is found on a drowning archeologist, the explorers shift their attention to uncovering the map's secrets. To their astonishment, they discover that it might lead to one of Hawaii's most puzzling mysteries--the burial place of the islands' most-revered ruler, King Kamehameha the Great! Adding danger to an already perilous journey, someone else is after the map--someone who seems willing to do just about anything to get it.