When Mimi, Papa, Christina and Grant visit a U.S. Park Ranger friend and her two children, the kids almost immediately embark on a GRAND adventure! Join them on an exciting tour--by helicopter, stubborn mule and tipsy-turvy whitewater raft--down the Colorado River through the Grand Canyon!

LOOK what's in this mystery - people, places, history, and more!

Grand Canyon, facts and history • The Navajo Nation History and customs • The Hopi Indian History and customs • Arizona history and symbols • Flagstaff, Arizona History • Geology of the Grand Canyon - Sedimentary rock - Mesa's - Colorado Plateau - Erosion • Kachina Dolls • Grand Canyon National Park - The Bright Angel Trail - Supai Village - El Tovar Hotel - The Visitor Center - Havasupai Indian Reservation • The Cameron Trading Post and The Little Colorado River Flagstaff, AZ.

This mystery incorporates history, geography, culture and cliffhanger chapters that keep kids begging for more! This mystery includes SAT words, educational facts, fun and humor, built-in book club and activities. This Carole Marsh Mystery also has an Accelerated Reader quiz, a Lexile Level, a Fountas & Pinnell guided reading level, and a Developmental Reading Assessment.