A search and rescue operation is underway for a woman wearing nothing but a fanny pack in the woods in southwest Washington state.

A friend reported the 19-year-old Vancouver woman missing in the early morning hours of Monday, Skamania County Undersheriff Dave Cox told Portland, Ore., TV station KPTV.

She was last seen walking away from a campsite at Canyon Creek Campground to go on a "spiritual quest," Cox said.

The woman was only wearing a fanny pack, which had a small knife and a compass inside, and perhaps some other items. She was otherwise naked and, though it was a mild night, not prepared for the elements.

"We had a fairly mild evening last night with temperatures in the lower 50s" Cox said. "We have set up a command post in the area and currently are utilizing ground search teams in the immediate area in an attempt to locate her this morning."

The campground is located in Gifford Pinchot National Forest about 60 miles northeast of Portland.