Pima County Sheriff's deputies are warning motorists about rock slides on Catalina Highway.
**Traffic Hazard**
Watch for rock slides on Catalina Highway, beginning at mile post 10. pic.twitter.com/rkDCP4iyp9
— Pima County Sheriff (@PimaSheriff) February 15, 2018
According to the department, the rock slides begin at milepost 10.
