Digging post holes in hard clay, sawing wood and spreading tons of gravel doesn’t sound like a summer vacation. But 19 college fraternity brothers from across the country paid for the privilege of working their way across the country this summer on a mission to help people with disabilities, one summer camp at a time.

The members of Pi Kappa Phi started their six weeks of hard labor and easy friendships at Stepping Stones Center’s resident camp for children and adults with disabilities at Camp Allyn in Batavia, Ohio and will end the summer odyssey this month at a rally in Washington, D.C. In between, they have work projects at camps in Indiana Illinois, Iowa, Georgia, and South Carolina.