Jessica Brown, a 24 year old American hiker had fallen off a ledge in the Austrian Alps and was stranded injured for 70 hours in freezing temperatures.

Mountain rescue looked at the wrong place and gave up the search because they believed she had fallen to her death.

But Jessica spotted a cable car on its way up the mountain in Salzburg and quickly flung her bra into a container carrying food as it passed her.  Lucky for her, workers higher up the peak realized that the bra must have been thrown in as a message and sent out a search party.

She was found and rescued. She is now recovering in hospital.