Allen Minish was alone and surveying land for a real estate agent in a wooded, remote part of Alaska, putting some numbers into his GPS unit when he looked up and saw a large brown bear walking about nine metres away.

"I saw him, and he saw me at the same time, and it's scary," Mr Minish said by phone from his hospital bed in Anchorage, a day after being mauled by the bear in a chance encounter.

The mauling left Mr Minish with a crushed jaw, a puncture wound in his scalp so deep that the doctor said he could see bone, lacerations and many stitches after a 4-and-a-half-hour surgery.

Warning: This article contains a graphic image of injuries.

He also is wearing a patch over his right eye because the doctors were worried about it.

All that happened during an encounter he estimated lasted less than 10 seconds after Mr Minish startled the bear on Tuesday morning near the small community of Gulkana, about 306 kilometres north-east of Anchorage.

Sudden attack

The bear, which Mr Minish said was larger than 136-kilogram black bears he had seen before, charged and closed the ground between them in a few seconds.

He tried to dodge behind small spruce trees, but that didn't stop the bear, it went through them.

As the bear neared, Mr Minish held up the pointed end of his surveying pole and pushed it toward the animal to keep it away from him.

The bear simply knocked it to the side and the force of the blow knocked Mr Minish to the ground.

"As he lunged up on top of me, I grabbed his lower jaw to pull him away," he said, saying that was how he got a puncture wound to his hand.

"But he tossed me aside there, grabbed a quarter of my face.

"He took a small bite and then he took a second bite, and the second bite is the one that broke the bones … and crushed my right cheek basically."

When the bear let go, Mr Minish turned his face to the ground and put his hands over his head.

And then the bear just walked away.

He surmises the bear left because he no longer perceived him as a threat.

The bear's exit — Alaska State Troopers said later they did not locate it — gave Mr Minish time to assess damage.

"I realised I was in pretty bad shape because I had all this blood everywhere."

Battle for survival

He called 911 on his mobile phone. While he was talking to a dispatcher, he pulled off his surveyor's vest and his T-shirt and wrapped them around his head in an attempt to stop the bleeding.

Then he waited 59 minutes for help to arrive.

He knows that is how long it took because he later checked his phone record for the length of the time he was told to stay on the line with the dispatcher until rescue arrived.

At one point, Mr Minish managed to give the dispatcher his exact coordinates from his GPS unit, but even that was a struggle.

"It took a while to give them that because I had so much blood flowing into my eyes and on to the GPS, I kept having to wipe it all off," he said.

He said one of the rescuers called him a hero after seeing how much blood was on the ground.

Rescuers tried to carry him through the woods to a road that parallels the nearby trans-Alaska pipeline to meet an ambulance.

That didn't work, and he said they had to help walk him just under half-a-kilometre through swamps, brush and trees.

From there, he was taken to a nearby airport and flown to Providence Alaska Medical Center in Anchorage. He is listed in good condition.

Before help arrived, Mr Minish said he worried about the bear returning to finish him off.

"I kept hearing stuff," he told the Associated Press.

But every time Mr Minish tried to lean up to look around, he got dizzy from his blood loss.

"He didn't come back, and so I just lay there and worried about it."

Mr Minish, 61, has had his share of bear encounters over the 40 years he has lived in Alaska, but nothing like this.

He owns his own surveying and engineering business, which takes him into the wild often.

"That's the one lesson learned," he said. "I should have had somebody with me."

He had left his gun in the vehicle on this job but said it would not have mattered because the bear moved on him too fast for it to have been any use.

Mr Minish can now add his name to the list of six people he knows who have been mauled by bears in Alaska.

"I guess I feel lucky," he said, adding someone told him he was better off hurt than dead.

"In all honesty, it wouldn't have mattered either way. You know, if it killed me, it killed me. I had a good life; I'm moving on.

"It didn't kill me, so now let's move on to the other direction of trying to stay alive."

AP