Search and rescue volunteers from the Deschutes County Sheriff’s Office brought an apparently disoriented hiker down from Green Lakes area in the Three Sisters Wilderness to the Green Lakes Trailhead on Tuesday.

The hiker, a 35-year-old Portland woman, was taken to St. Charles Bend for evaluation, according to a news release from the sheriff’s office.

Search and rescue personnel received a call about 9:20 a.m. Tuesday from a male hiker who encountered Keya Mitra wandering around near the Green Lakes campsites. Hiking alone the previous day in the South Sister area, the caller told search and rescue, Mitra had fallen several times, become disoriented and walked around the area all night, according to the news release. She had not planned to stay overnight, according to the sheriff’s office.

The caller said he would stay with Mitra until search and rescue personnel arrived. Volunteers reached Mitra about 12:45 p.m. after hiking more than 4 miles from the trailhead, according to the news release. They decided to bring her back to the trailhead in a wheeled litter and handed her over to Sunriver Fire Department personnel.

Search and rescue personnel recommend hikers not travel alone and to make sure family and friends know about hiking plans and the appropriate agency to contact in an emergency.