sentences:  Alaska is generally considered the birthplace of packrafting as long distance, non-motorized, landscape travel across untracked wilderness necessitates a small, portable boat for water crossings.Dick Griffith, Roman Dial (author of "Packrafting!An Introduction and How-to Guide"), the Alaska Mountain Wilderness Classic, Sheri Tingey (founder of Alpacka Rafts), and Erin McKittrick (author of" A Long Trek Home