A 28-year old Ava man is dead after a one-vehicle traffic crash in Perry County. It happened around 11 PM, Saturday on Whitetail Road, north of Pyatt-Cutler Road by Pyramid State Park, west of DuQuoin.  Perry County Coroner Paul Searby says the car, driven by David Gonzales, failed to make a turn, then left the road and hit a tree.  A passerby reported the accident to authorities.  Searby says Gonzales was pronounced dead at the scene just before midnight.  The accident is still under investigation.