Russian teenager Olga Moskalyova was on the phone to her mother when she suffered the most harrowing death imaginable.
In August 2011, the 19-year-old was on a hike with her stepfather, Igor Tsyganenkov, near the Far Eastern city of Petropavlovsk-Kamchatsky.
The pair were walking along a river to retrieve a fishing rod he had left behind when they were targeted by a mother Kamchatka brown bear and her three cubs.
On average, a female Kamchatka weighs up to 317.5 kg, while a large male can be as much as 635 kg.
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It is significantly larger than the more common mainland grizzly, which is about 40 percent lighter on average.
So when one attacked Olga and her stepfather, they were immediately in very real danger.
Olga's last words
The aggressive predator first lunged at Igor, crushing his skill and neck in front of Olga. She was briefly able to escape, running around 200 feet before the bear caught up with her.
After biting into her leg, Olga was dragged to the ground by the bear. Terrified, the teenager phoned her mother numerous times, at first shouting: "Mum, the bear is eating me! Mum, it's such agony. Mum, help!"
Olga's mother Tatiana, had initially thought she was joking, only realising the true extent of the situation when she heard the beast growling and chewing in the background.
"I heard the real horror and pain in Olga's voice, and the sounds of a bear growling and chewing," the heartbroken mother recalled (via MailOnline).
"I could have died then and there from shock."
Tatiana then attempted to phone her husband for help, unaware that he'd already been killed by the mother bear, before contacting the police and begging them to head to the river where her husband and daughter had gone to retrieve a fishing rod.
Olga's second phone call to her mum
Olga would then call her mother for a second time, revealing that the mother bear had now returned – this time bringing her cubs.
"Mum, the bears are back. She came back and brought her three babies," she cried.
"They're... eating me."
She would make a heartbreaking final call to her mother about an hour later, informing her that she was no longer in pain, having likely gone into shock.
"Mum, it's not hurting anymore. I don't feel the pain," she told her mother. "Forgive me for everything, I love you so much."
The bodies of Olga and Igor were later recovered that day, when a search party, including Igor's brother and local police, arrived on the scene. It was here that they found the bears eating Igor's remains, while Olga's body lay nearby.
The mother bear and her cubs were later shot and killed by hunters in order to prevent any further attacks.
Paying tribute to her 'fun, warm and friendly' daughter, Tatiana said: "She had graduated from music school, and just days before the bear attack, she got her driving licence."
Additional words by Brenna Cooper.
Anish Vij