An early Saturday morning accident on Peachers Mill Road in Clarksville killed the driver.
Investigation by Clarksville Police determined a 27-year old male had been northbound when he lost control of his car, spun out, and struck a curb.
The vehicle then struck a boulder on the side of the road and overturned, partially ejecting the man, who was pronounced dead at the scene.
A 24-year old female passenger was able to escape the car by crawling out of a window and refused an ambulance trip to the hospital.
A witness told police the car had been traveling at a high rate of speed prior to crashing and neither occupant was wearing a seat belt.
Names of those involved have not been released.