In this April 12, 2016 photo provided by Dartmouth College, silicone rubber is poured over a foam cast, created by using three-dimensional geometry, to create a mold for a hold that will be mounted on a climbing wall in Hanover, N.H. The hold, created by using three-dimensional geometry, is part of a replica of a rock wall created by tracking a climber's hand and foot positions and by estimating the contact forces. (Emily Whiting/Dartmouth College via AP)
Featured Photo Galleries
