Primary editor and executive director of the Arizona Trail Association, Matthew J. Nelson has more than 500 published articles to his credit and has explored many parts of the Arizona National Scenic Trail. He divides his time between Flagstaff, AZ and Big Pine, CA.

• TABLE OF CONTENTS Acknowledgments Dedication Introduction The Arizona National Scenic Trail History Arizona Trail Association Use at Your Own Risk Planning Your Trip When to Go Permits Fences and GatesBackcountry Safety Water Contaminated Water Dehydration Heat Exhaustion Hypothermia Flash Floods Lightning Animals Mine Shafts SnagsLeave No Trace Plan Ahead and Prepare Etiquette Travel and Camp on Durable Surfaces Equestrians Leave What You Find Use Fire Responsibly Conserve Water Pack it In, Pack it Out Waste Disposal Wilderness AreasThe Botany of Diversity Southern Region Central Region Northern RegionWelcome to the Geology of Arizona Geological Time Scale Plate Tectonics Rock Classifications The Rock Cycle Physiographic Provinces Basin and Range Province (Passages 1 to 18) Transition Zone Province (Passages 19 to 25) Colorado Plateau Zone (Passages 20 to 43)SOUTH PASSAGES 1 Huachuca Mountains 2 Canelo Hills East 3 Canelo Hills West 4 Temporal Gulch 5 Santa Rita Mountains 6 Las Colinas 7 Las Cienegas 8 Rincon Valley 9 Rincon Mountains 10 Redington Pass 11 Santa Catalina Mountains 12 Oracle Ridge 13 Oracle 14 Black Hills 15 Tortilla Mountains CENTRAL PASSAGES 16 Gila River Canyons 17 Alamo Canyon 18 Reavis Canyon 19 Superstition Wilderness 20 Four Peaks 21 Pine Mountain 22 Saddle Mountain 23 Mazatzal Divide 24 Red Hills 25 Whiterock Mesa 26 Hardscrabble Mesa 27 Highline NORTH PASSAGES 28 Blue Ridge 29 Happy Jack 30 Mormon Lake 31 Walnut Canyon 32 Mount Elden 33 Flagstaff (Resupply Route) 34 San Francisco Peaks 35 Babbitt Ranch 36 Coconino Rim 37 Grand Canyon South Rim 38 Grand Canyon Inner Gorge 39 Grand Canyon North Rim 40 Kaibab Plateau South 41 Kaibab Plateau Central 42 Kaibab Plateau North 43 Buckskin Mountain GATEWAY COMMUNITIES (South to North) Sierra Vista Patagonia Sonoita Vail Tucson Summerhaven Oracle San Manuel Mammoth Globe Copper Corridor (Central): Kelvin, Riverside, Kearny, Hayden, Winkleman, and Dudleyville Florence Superior Roosevelt and Tonto Basin Payson Pine and Strawberry Mormon Lake Flagstaff Tusayan and Grand Canyon Village North Rim to Jacob Lake Page Fredonia, Arizona, and Kanab, UtahGEOLOGY SITES (South to North) The Karst of Colossal Cave The Mighty Santa Catalina and Rincon Mountains Super Volcanoes of the Superstition Mountains Amazing Mazatzals Mount Elden--A Volcano Unlike the Others The San Francisco Peaks' Violent Past Grand Canyon--A Geological MasterpieceAppendices Water Sources Land Management Agencies Trail Resources Index

Primary editor and executive director of the Arizona Trail Association, Matthew J. Nelson has more than 500 published articles to his credit and has explored many parts of the Arizona National Scenic Trail. He divides his time between Flagstaff, AZ and Big Pine, CA.

• TABLE OF CONTENTS Acknowledgments Dedication Introduction The Arizona National Scenic Trail History Arizona Trail Association Use at Your Own Risk Planning Your Trip When to Go Permits Fences and GatesBackcountry Safety Water Contaminated Water Dehydration Heat Exhaustion Hypothermia Flash Floods Lightning Animals Mine Shafts SnagsLeave No Trace Plan Ahead and Prepare Etiquette Travel and Camp on Durable Surfaces Equestrians Leave What You Find Use Fire Responsibly Conserve Water Pack it In, Pack it Out Waste Disposal Wilderness AreasThe Botany of Diversity Southern Region Central Region Northern RegionWelcome to the Geology of Arizona Geological Time Scale Plate Tectonics Rock Classifications The Rock Cycle Physiographic Provinces Basin and Range Province (Passages 1 to 18) Transition Zone Province (Passages 19 to 25) Colorado Plateau Zone (Passages 20 to 43)SOUTH PASSAGES 1 Huachuca Mountains 2 Canelo Hills East 3 Canelo Hills West 4 Temporal Gulch 5 Santa Rita Mountains 6 Las Colinas 7 Las Cienegas 8 Rincon Valley 9 Rincon Mountains 10 Redington Pass 11 Santa Catalina Mountains 12 Oracle Ridge 13 Oracle 14 Black Hills 15 Tortilla Mountains CENTRAL PASSAGES 16 Gila River Canyons 17 Alamo Canyon 18 Reavis Canyon 19 Superstition Wilderness 20 Four Peaks 21 Pine Mountain 22 Saddle Mountain 23 Mazatzal Divide 24 Red Hills 25 Whiterock Mesa 26 Hardscrabble Mesa 27 Highline NORTH PASSAGES 28 Blue Ridge 29 Happy Jack 30 Mormon Lake 31 Walnut Canyon 32 Mount Elden 33 Flagstaff (Resupply Route) 34 San Francisco Peaks 35 Babbitt Ranch 36 Coconino Rim 37 Grand Canyon South Rim 38 Grand Canyon Inner Gorge 39 Grand Canyon North Rim 40 Kaibab Plateau South 41 Kaibab Plateau Central 42 Kaibab Plateau North 43 Buckskin Mountain GATEWAY COMMUNITIES (South to North) Sierra Vista Patagonia Sonoita Vail Tucson Summerhaven Oracle San Manuel Mammoth Globe Copper Corridor (Central): Kelvin, Riverside, Kearny, Hayden, Winkleman, and Dudleyville Florence Superior Roosevelt and Tonto Basin Payson Pine and Strawberry Mormon Lake Flagstaff Tusayan and Grand Canyon Village North Rim to Jacob Lake Page Fredonia, Arizona, and Kanab, UtahGEOLOGY SITES (South to North) The Karst of Colossal Cave The Mighty Santa Catalina and Rincon Mountains Super Volcanoes of the Superstition Mountains Amazing Mazatzals Mount Elden--A Volcano Unlike the Others The San Francisco Peaks' Violent Past Grand Canyon--A Geological MasterpieceAppendices Water Sources Land Management Agencies Trail Resources Index

Primary editor and executive director of the Arizona Trail Association, Matthew J. Nelson has more than 500 published articles to his credit and has explored many parts of the Arizona National Scenic Trail. He divides his time between Flagstaff, AZ and Big Pine, CA.

• TABLE OF CONTENTS Acknowledgments Dedication Introduction The Arizona National Scenic Trail History Arizona Trail Association Use at Your Own Risk Planning Your Trip When to Go Permits Fences and GatesBackcountry Safety Water Contaminated Water Dehydration Heat Exhaustion Hypothermia Flash Floods Lightning Animals Mine Shafts SnagsLeave No Trace Plan Ahead and Prepare Etiquette Travel and Camp on Durable Surfaces Equestrians Leave What You Find Use Fire Responsibly Conserve Water Pack it In, Pack it Out Waste Disposal Wilderness AreasThe Botany of Diversity Southern Region Central Region Northern RegionWelcome to the Geology of Arizona Geological Time Scale Plate Tectonics Rock Classifications The Rock Cycle Physiographic Provinces Basin and Range Province (Passages 1 to 18) Transition Zone Province (Passages 19 to 25) Colorado Plateau Zone (Passages 20 to 43)SOUTH PASSAGES 1 Huachuca Mountains 2 Canelo Hills East 3 Canelo Hills West 4 Temporal Gulch 5 Santa Rita Mountains 6 Las Colinas 7 Las Cienegas 8 Rincon Valley 9 Rincon Mountains 10 Redington Pass 11 Santa Catalina Mountains 12 Oracle Ridge 13 Oracle 14 Black Hills 15 Tortilla Mountains CENTRAL PASSAGES 16 Gila River Canyons 17 Alamo Canyon 18 Reavis Canyon 19 Superstition Wilderness 20 Four Peaks 21 Pine Mountain 22 Saddle Mountain 23 Mazatzal Divide 24 Red Hills 25 Whiterock Mesa 26 Hardscrabble Mesa 27 Highline NORTH PASSAGES 28 Blue Ridge 29 Happy Jack 30 Mormon Lake 31 Walnut Canyon 32 Mount Elden 33 Flagstaff (Resupply Route) 34 San Francisco Peaks 35 Babbitt Ranch 36 Coconino Rim 37 Grand Canyon South Rim 38 Grand Canyon Inner Gorge 39 Grand Canyon North Rim 40 Kaibab Plateau South 41 Kaibab Plateau Central 42 Kaibab Plateau North 43 Buckskin Mountain GATEWAY COMMUNITIES (South to North) Sierra Vista Patagonia Sonoita Vail Tucson Summerhaven Oracle San Manuel Mammoth Globe Copper Corridor (Central): Kelvin, Riverside, Kearny, Hayden, Winkleman, and Dudleyville Florence Superior Roosevelt and Tonto Basin Payson Pine and Strawberry Mormon Lake Flagstaff Tusayan and Grand Canyon Village North Rim to Jacob Lake Page Fredonia, Arizona, and Kanab, UtahGEOLOGY SITES (South to North) The Karst of Colossal Cave The Mighty Santa Catalina and Rincon Mountains Super Volcanoes of the Superstition Mountains Amazing Mazatzals Mount Elden--A Volcano Unlike the Others The San Francisco Peaks' Violent Past Grand Canyon--A Geological MasterpieceAppendices Water Sources Land Management Agencies Trail Resources Index