The Mono County Sheriff's Office says their Search and Rescue Team responded to the Incredible hulk area of the Sawtooth Range of the Sierra above Bridgeport, California this weekend to rescue a hiker who is now in critical condition.

They said a 28-year-old female hiker from the Bay Area fell down a steep snow-filled gully, out of sight of her hiking partner.

Mono County Sheriff's Office said the pair split their gear and attempted to cross a steep snowfield.

The hiking partner couldn't make contact with her, and she didn't have the proper equipment to look for her. There was also no cell phone service, so she set out for help.

Mono County Sheriff's Office says it took two hours for her to make it to Mono Village and call 9-1-1.

They said the initial call came in around 11:51 p.m. on Saturday.  The Search and Rescue Team set out at 12:30 a.m. on Sunday.

The hiking partner accompanied the teams to guide them to the spot where the woman fell. They arrived back in two-and-a-half hours.

Mono County Sheriff's Office says the injured hiker was in critical condition, with traumatic head injuries, broken bones, hypothermia and likely internal damage. She was non-responsive.

Because of the extreme travel conditions between Barney Lake trail and the base of the Incredible Hulk, a California Highway Patrol helicopter couldn't make it to them until around 7 a.m.

During that time, crews gave rescue breathing to maintain the injured hiker's vitals.

She was flown to the Bridgeport International Airport and then taken via CareFlight to Renown Medical Center in Reno.

The rescue team was in the field for a total of around nine hours. 

Mono County Sheriff's Office says at this time, the hiker remains in critical condition.

(The Mono County Sheriff's Office contributed to this report).