BYU's main campus is 561 acres in size and includes roughly 100 large academic buildings. There are some 6,000 trees (900 species), miles of sidewalks, and, according to most students, far too many stairs. Civil engineering grad student Bryce Berrett and his faculty mentors have virtually mapped every last inch of it. Using more than 80,000 drone-captured and ground images, and applying GPS for accuracy, Berrett has stitched together a comprehensive 3D model of the entire BYU campus. "There are