The Martz Rock Shelters was an archaeological site located near Myersdale, Somerset County, Pennsylvania, US, on the farm of Harry Martz. The Somerset County Archaeological Survey began its excavations on June 14, 1938, and was completed six days later. The site was located about 30 miles from Metropolitan Pittsburgh. The site was discovered around 1938 during the Works Projects Administration excavation project, necessary for the construction of state highway 219. It was located at a hill overlooking the Casselman River from which a shale ledge protruded about two hundred and fifty feet above the river. The opening of the caves faced south. The site was destroyed during the construction of the highway.