An Australian woman went hiking in Canada two weeks ago. She hasn't been seen since.

Family and friends hold grave fears for a Melbourne woman who was last seen July 8 on a hike with her boyfriend in Canada.

Sophie Dowsley, 34, and her Canadian boyfriend, Greg Tiffin, 44, have not been seen since they embarked on a day trip near Harrison Hot Springs, west of Vancouver, almost two weeks ago.

The area is home to Statlu Falls, which a Canadian official described as "a waterfall with a history of fatalities."

Authorities were called when the pair failed to turn up to their jobs on Monday.

On the same day she and her partner were last seen, Dowsley, who had been living in Canada for the past three years, posted an image of the area she was hiking in to Instagram.

Beautiful BC ❤???????????? . . . #harrisonhotsprings #harrisonlake #beautifulbc

A post shared by Sophie Dowsley (@sophiedowsley) on Jul 8, 2017 at 9:18am PDT

Fears for the pair's well-being mounted after Dowsley's sunglasses were found near the waterfall.

A number of Tiffin's personal items were found in the water below the waterfall and their empty SUV was parked nearby.

"It's the worst possible nightmare that you could imagine," Dowsley's father, Peter, told CTV Vancouver News.

"I couldn't dream of anything worse."

The family flew to Canada to help search for the missing pair as soon as they were notified of her disappearance.

"We just hope that they're alive. We think in our heart of hearts that they might be. We just need to know," he said.

"They've gone to a very dangerous place and they haven't come out.

"The terrain is just absolutely stunningly beautiful and rugged and unforgiving. Obviously, the only people that can be in there are trained professionals."

An official from Kent Harrison Search and Rescue, Neil Brewer, told CTV the area—and the waterfall—had a "history of fatalities."

"We have not been to that location for close to 20 years, but 20 years ago we went there three times, three consecutive years, for exactly the same scenario and a fatality each time," Brewer said.

The couple's disappearance is made all the more difficult due to a lack of resources, with many of Canada's rescue crews fighting fires across the state.

Friends and family have posted heartfelt messages to Facebook as they wait to hear if Dowsley and Tiffin have been found alive.

"[Greg] was funny, sarcastic, meticulous and adventurous," Leigh-Anne Larsen wrote.

"It's hard to imagine life without his insight and humour. He will be greatly missed as a beloved son, brother, uncle and as my friend."

A Department of Foreign Affairs spokesman has confirmed they are working with Dowsley's family in connection with her disappearance.

"The Department of Foreign Affairs and Trade is providing consular assistance to the family of an Australian woman reported missing in Canada," the spokesman said.