HONOLULU (KHON2) — The Kaua’i Fire Department rescued a Montana woman from Kalalau Beach on Monday, Sept. 20, after crews spotted an “SOS” written in the sand.

KFD said a report came in at 9 a.m. Monday to report the hiker in distress at Kalalau Beach.

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First responders arrived at the beach and campsite shortly after 9:30 a.m. while the Air 1 rescue helicopter was en route. Officials could not locate the Montana woman after almost an hour of searching and talking to other hikers, KFD said.

A new set of coordinates were relayed to Air 1 but the aircraft needed to refuel at Līhu‘e Airport before the search could resume. Air 1 continued the search at 11:15 a.m. and located an “SOS” in the sand and saw the woman waiving for help on the beach.

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KFD found the hiker and said she required assistance out of the campsite. The woman was transported by Air 1 to awaiting firefighters and American Medical Response personnel — her condition is not known.