A 12 year-old South Australian girl has fallen at least 20 metres down a descent on the Uluru Summit, after losing her footing on the lower section of the climb.

The Royal Flying Doctor Service, who were initially very concerned about the potential injuries given the nature of the accident, transported the girl to Alice Springs Hospital, where she is in a stable condition.

The 12-year-old sustained a compound finger fracture, considerable grazing and an ankle injury, but has been told by the RFDS that she is incredibly lucky to be alive after the fall.