A Colorado hiker lost in southern Germany's Bavarian Alps for almost three days used her white bra to signal for help and it led rescuers to the ledge where she was stranded.

Jessica Bruinsma, 24, was hiking with a friend near the Austrian border on June 16 when she lost her way due to bad weather and fell to a narrow ledge.

Her injury from the fall and the isolated cliff prevented her from climbing free for the next 70 hours. She survived by drinking water from a supply box on the ledge and eating biscuits.

Rescuers could not find the missing woman until she noticed a mountainside cable used to lower timber started moving Thursday. She attached her bra to the cable. Lumberjacks at the base of the mountain saw the bra and alerted police, who sent a helicopter to search for her.

The helicopter found her and rescuers lifted her from the ledge.