Alumni Ian Raphael ’18 and Andrew Crutchfield ’18 return to the Stretch to show students what’s possible. Hit the road with the 2018 Stretchies: http://bit.ly/2SWmGSW The Stretch—Dartmouth’s storied earth sciences off-campus program—takes 22 undergraduates, six faculty members from the Department of Earth Sciences, and six graduate student teaching assistants into the field on a geological tour of the American West, from the glaciers of the Canadian Rockies to the floor of the Grand Canyon.