Kuhl Hose and Emergycare responded to a single vehicle accident just north of Barton Rd on Rt 8.  A large Van hit a guard rail and rolled over taking down several trees before coming to rest between on it's side.  The driver was self extricated and refused treatment.  Crews secured the vehicle and waited for the tow service to bring the van back over the guard rail.  Crews were on the scene for over an hour.  PSP is investigating the accident.