A tragic incident unfolded as a 21-year-old woman from New Jersey succumbed to hypothermia after losing her footing off a trail near the peak of New York’s highest mountain during a winter trek, authorities reported.

On February 12, Brianna Mohr was discovered close to the summit of Mount Marcy by New York State Forest Rangers, where she was declared deceased, as confirmed by the New York State Police.

According to state rangers, they were alerted to a situation involving a hiker and her dog in distress on Mount Marcy around 3 p.m., prompting an extensive search operation.

Mohr was located at approximately 9 p.m., but unfortunately, she showed no signs of life. An autopsy later confirmed that hypothermia was the cause of her death.

Brianna Mohr, remembered for her love of hiking, tragically died from hypothermia during a trek in New York. A photo from her Instagram captures a moment from her hiking adventures.

Thankfully, her dog remained unharmed and was successfully rescued from the scene.

According to AccuWeather.com, temperatures in Keene, New York, where the mountain is located, ranged from -8 to 20 degrees the day Mohr was hiking. Mount Marcy, in the Adirondacks, is the tallest mountain in the state at 5,344 feet.

Mohr called 911 at 3:05 p.m. to report that she had slipped off the trail near the summit and was unable to get back to it, a spokesperson for the New York State Department of Environmental Conservation told the Asbury Park Press.

A 21-year-old New Jersey woman died of hypothermia after slipping off a trail near the summit of Mount Marcy in the Adirondacks, officials said. (Brianna Mohr/Instagram)

Rangers searched for Mohr with snowmobiles and a tracked utility vehicle and the state police Aviation Unit flew overhead in case of a hoist rescue, the outlet reported.

The paper said rangers aboard the helicopter were unable to locate Mohr, and one ranger was dropped at the Marcy Dam Outpost to continue the search on foot just past 6 p.m.

The outlet shared a message posted on Instagram on Feb. 16 by Mohr’s brother Ryan.

“You were the best friend and sister I could have ever asked for growing up with you was awesome because I always had you to tell me what was cool and what wasn’t because you were and always will be the coolest person I know,” he wrote.

Brianna Mohr was found dead near the summit of Mount Marcy after calling 911 during a winter hike, authorities said. (Brianna Mohr/Instagram)

Mohr’s mother, Stephanie West, posted a photo of her daughter on Valentine’s Day with the caption, “I am so lost.”

Mohr’s Instagram account includes dozens of photos from trips to scenic destinations, including national parks.