Sharp Mountain or Sharp Ridge in eastern central Pennsylvania in the United States is a ridgeline of the Ridge-and-Valley Appalachians cut through on its east-side in the Tamaqua gap by the Little Schuylkill River which sunders it from the eastern extension of the ridgeline, the Nesquehoning Ridge. The ridgeline, located in the heart of Pennsylv…Sharp Mountain or Sharp Ridge in eastern central Pennsylvania in the United States is a ridgeline of the Ridge-and-Valley Appalachians cut through on its east-side in the Tamaqua gap by the Little Schuylkill River which sunders it from the eastern extension of the ridgeline, the Nesquehoning Ridge. The ridgeline, located in the heart of Pennsylvania's anthracite Coal Region, drains to the Schuylkill River along its western slopes and into the Little Schuylkill River tributary of the Schuylkill River on its east.