BOULDER COUNTY, Colo. -- A search is ongoing for a missing hiker in Boulder County.
The search began Tuesday after two hikers near the Arapaho Pass Trail and Arapaho Glacier Trail west of Nederland heard a female yelling for help.
The hikers searched the area for a short time, then contacted the Nederland Police Department about 4 p.m.
The Boulder County Sheriff's Office said there are indications a female was hiking in the area. Her vehicle, a blue Subaru station wagon, was found at the Fourth of July trailhead.
Crews brought in a K-9 team from the Front Range Rescue Dog Team and established a command post along one of the four-wheel drive roads.
Anyone who was hiking in the area at the time is asked to call the sheriff's office at 303-441-4444.