This tower is located in Big Pocono State Park, near Tannersville, PA.
From the PA State Park Website (link below):
Since 1921, the Pennsylvania Bureau of Forestry has maintained Big Pocono Fire Tower on the mountain for the purpose of detecting forest fires in the surrounding private and state forest lands. The tower is staffed only during the spring and fall seasons and has been dedicated by the National Fire Tower Association as a historical structure.
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Big Pocono Mountain is over 2100 ft tall and is about 1000 ft above the surrounding countryside.