Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Parnell Knob - Parnell Knob is a mountain in the Ridge and Valley Appalachians region of south central Pennsylvania. This knob rises above the village of St. Thomas where Front Mountain and Broad mountain come together. It is a feature sculptured by the hard dense Tuscarora quartzite of the Silurian age. Parnell Knob is conspicuous in that it rises abruptly above the relatively level Great Appalachian Valley.
Natural Place