A 65-year-old woman has been airlifted to hospital after falling an estimated 8 metres down a stairwell in the Blue Mountains this evening.

The woman was found unconscious at the base of a stairwell at a residence in Leura.

CareFlight’s rapid response rescue helicopter was tasked shortly before 7pm, landing in an oval near the residence.

CareFlight’s specialist doctor and intensive care paramedic intubated the woman who had suffered serious head injuries.

She was airlifted to Westmead Hospital in a critical condition.