Manchester-by-the-Sea police and firefighters on Wednesday rescued a woman stuck in a swampy area in the woods off Route 128, officials said.

A middle-aged woman who was walking in the evening “lost her way and became disoriented,” Fire Chief James McNeilly told Boston.com .

After following sounds of traffic from nearby Route 128, the woman was led into a swamp area, where she called 911, McNeilly said.

North Shore Regional 911 used What3Words — “a location technology that divides the world into 10-foot squares and assigns each one a unique three-word address” — to find the woman, the fire department said on Facebook .

He said the woman, who declined medical attention, was found in the area adjacent to Route 128, between School Street and Pine Street.

“Manchester Police was then a

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