Grays Woods (also Graysdale) is a neighborhood and unincorporated community in Patton Township, Centre County, Pennsylvania, United States.

The branch was built to carry iron ore, the mining of which supported Graysdale and other local towns.

Ore mining resumed, the line from Graysdale to Mattern Bank was re-laid in 1900, and a new branch was built from Graysdale to Scotia; however, the furnace was unable to compete with more modern iron and steel mills, and shut down again, permanently in 1910.

[1] The McNitt-Huyett Lumber Company laid a third rail on the line from Mattern Junction to Scotia around this time, to operate its 36-inch (91.44 cm) logging trains, but both the lumber company and the Bellefonte Central removed their tracks through Graysdale in 1915.

[4] In 2017 Patton Township acquired 149-acre of pitch pine-scrub oak forest in the Scotia Barrens for the Gray's Woods Preserve.