A 30-year-old Prairie du Sac man was killed in an ATV crash Saturday evening in the town of Montrose.
The Dane County Sheriff's Office said Kevin Schaefer of Prairie du Sac died when his ATV rolled over in the 1300 block of Sayles Trail.
Authorities said it appeared inexperience, unfamiliarity with the territory and speed may have contributed to the crash.
Authorities said the driver was coming down a hill when the ATV rolled over, pinning the victim. A friend riding on a separate ATV tried to revive the victim, according to authorities.
The Dane County Sheriff's Office said it continues to investigate the crash.