A woman died Monday evening from injuries sustained in a motorcycle crash Thursday afternoon near Nemo.
The name has not been released pending notification of family.
The Highway patrol says the motorcycle was traveling north on Nemo Road and attempted to pass a road grader in a no passing zone. A car came around the corner from the opposite direction.
The driver of the motorcycle lost control, throwing the driver. She received life threatening injuries.
The 59-year-old woman was life-flighted to a Rapid City Hospital. She passed away f Monday evening.
She was not wearing a helmet.