Bush and mountain with danger sign.

A young woman has died and a young man has been critically injured while climbing a mountain on the Sunshine Coast.  (ABC News: Josh Dye)

An 18-year-old woman has died and another teenager has been critically injured after falling while hiking in the Glasshouse Mountains on Queensland’s Sunshine Coast.

Emergency crews were called to Mount Beerwah at about 10:30am on Sunday after reports that the pair had fallen a substantial distance.

A view from above showing Mount Beerwah.

Paramedics and rescue teams were called to Mount Beerwah on Sunday morning after two people fell while climbing. (ABC News)

The woman from Brisbane was assessed with life-threatening injuries and was later pronounced dead at the scene.

The 18-year-old man, also from Brisbane, was flown to Sunshine Coast University Hospital in a critical condition.

Back of a packed fire truck.

Paramedics and rescue teams were called to Mount Beerwah in the Glasshouse Mountains this morning.   (ABC News: Josh Dye)

The mountain had been closed to hikers due to adverse weather.

Senior Sergeant Kylie McLellan said the two climbers plunged between 50 and 100 metres while descending the mountain during “difficult” conditions.

“The falls occurred as a result of some light rain that made the terrain quite slippery,” she said.

Senior Sergeant McLellan said it was “an extraordinarily sad and tragic accident”.

“A group of young people hiking, partaking in some healthy activities … it’s an absolute tragedy,” she said.

“Our hearts go out to their family and friends.”

She said the incident involved six climbers across two separate groups.

“There was the deceased and her sister and her sister’s boyfriend in one group, then another group separate to that who rendered first aid,” she said.

The four other people involved in the incident were also rescued from the mountain but suffered no injuries.

Yellow caution tape tied many ways between two trees to block a walking path.

Queensland Ambulance Service says a group of hikers were climbing the mountain when the pair fell a “substantial” distance.  (ABC News: Josh Dye)

The complex rescue operation involved QFES mountain rescue and remote rescue teams, who navigated difficult terrain and adverse weather conditions to reach the pair.

The mountain was closed between March 9-15 due to weather and was expected to reopen on Monday.

Police vehicle parked, bushland and mountain in the background.

Police at the scene in the Glasshouse Mountains. (ABC News: Josh Dye)