Provincial police are investigating a collision in Chatsworth that sent two people to a hospital, one in critical condition.
Police say the single-vehicle crash happened on Side Road 7 east of Grey Bruce Line on Sunday evening.
Police say the driver and passenger were found trapped inside the SUV.
The driver, a 23-year-old Chesley man, was removed unconscious from the vehicle and taken to hospital with life-threatening injuries.
His passenger, a 26-year-old Arran-Elderslie man, suffered minor wounds.
Grey Bruce OPP is urging anyone with information to come forward.