Spruce Hall is one of the primary housing units for students staying at the MDI Biological Laboratory. It has eight rooms. Wireless connectivity is in all campus housing units. There are two gender-specific bathrooms, and a large common space. Spruce’s double occupancy rooms have twin beds, closets, and plentiful desk space. Both male and female students are housed in this winterized dorm. The sandpit volleyball court is located next to Spruce and is the home of the annual volleyball tournament.