“We had a nurse who used to work at the asylum come and talk,” he said. The nurse mentioned that staff had once used underground passageways to get around the campus. “She also started a conversation about how many tunnels there were under Kalamazoo, they connected all the old buildings apparently before there was snow removal,” he added. Jon’s wondering where old tunnels can be found in the city. The State Hospital once had another campus at its residential farms southwest of town. By 1970 it was abandoned, and the tunnels became a destination for adventure-seekers, against officials’ wishes. “They’re kind of fun when you think about the interconnection that’s hidden, and all that kind of thing. It’s like the mystery of it,” said Sharon Ferraro, the City of Kalamazoo historic preservation coordinator.