Women use Facebook for Belfast Divis Mountain rescue
Two women, one with a suspected broken leg, have been rescued from Divis Mountain in Belfast.
They had no phone signal, so were only able to contact the emergency services by using Facebook.
The coastguard received the alert just before 23:00 GMT on Saturday and said the women were found by studying the pictures they had sent.
A police helicopter took them to hospital for treatment.
Dawn Petrie, from the coastguard, said weather conditions at the time were not favourable.
"Whenever we got the photograph through, there had been heavy rain, it was misty, it was cold, it was damp," she said.
"Fortunately that cloud actually cleared to allow the police helicopter to attempt to attend should the ambulance not have been able to reach them."