Students walk past the construction for the expansion of the Thayer School of Engineering at Dartmouth College in Hanover, N.H., on Thursday, Feb. 21, 2019. The current work on the three-level underground parking garage involves moving out 150,000 cubic yards of material. Students diverted to the staircase say their route to class is now only two or three minutes longer. (Valley News - Joseph Ressler) Copyright Valley News. May not be reprinted or used online without permission. Send requests to permission@vnews.com. Credit: Valley News โ Joseph Ressler