A hiker was rescued in Pinkham Notch early Tuesday morning after falling into the Ellis River and losing a shoe as temperatures dropped overnight.

New Hampshire Conservation Officers received a 911 call around 10:45 p.m. Monday night notifying them of a woman who was wet and cold, and stuck in a steep embankment along the river next to the Tuckerman Ravine Trail, according to a press release from the state Fish and Game Department.

Authorities were unable to call the hiker back, and officers quickly prepared for the rescue due to concerns of hypothermia, the release said. The temperature in the area was around 52 degrees at the time of the call with temperatures expected to dip further before dawn.

Rescuers made it to the trailhead just before midnight and proceeded toward the area where the hiker was said to be, about half a mile from the AMC Pinkham Notch Visitor Center, the release said.

Around 1:20 a.m., rescuers found the hiker on the opposite side of Ellis River from the trail. Christine Beaulieu, 37, of Laval, Quebec was “found to be very cold and wet,” authorities said. She was given warm clothing and rescuers helped her back across the river toward the trail, where she was able to hike back down with them. The group arrived back at the Pinkham Notch Visitor Center around 2:25 a.m.

Beaulieu didn’t have a headlamp or flashlight with her, which authorities believe contributed to the situation, the release said.

“Once daylight ran out, Beaulieu decided to follow the Ellis River down Mt. Washington as she could not see the hiking trail,” authorities said in the press release. “During this process she fell into the water, got soaking wet and lost a shoe. Beaulieu feared for her life, which was well founded given the falling temperatures and hours before sunup.”