YELLOWSTONE NATIONAL PARK — A Russian teen died while hiking after she apparently strayed from the trail and fell near Inspiration Point in the Grand Canyon of the Yellowstone last week.

National Park Service officials identified the hiker as 18-year old Maria “Masha” Sergeyevna Rumyantseva of Kaliningrad.

Rumyantseva had just started as a Yellowstone concession employee and was hiking the canyon’s North Rim Trail with three acquaintances Thursday when she ventured onto a loose rock promontory, which quickly gave way underneath her, park service officials said.

Yellowstone rangers got a 911 call about the accident at 5:44 p.m. Thursday. With the assistance of ground spotters and a Teton Interagency helicopter, rangers observed her body resting some 400 feet down the canyon wall. They concluded that she had sustained “non-survivable injuries.”

Despite the hazardous terrain, the body was successfully recovered from the canyon by short-haul helicopter operation June 8.

The accident remains under investigation, and park officials hikers to stay on posted, designated canyon rim trails due to the instability of loose dirt and rock near ledges.