sentences:  Further down the gorge, Mill Creek passes through Limestone Hills Park, and then forms the western boundary of the DelCastle Recreation Area.Continuing south and passing under Limestone Road, the hills on either side diminish in height, and development increases, although the steep sides have protected the creek from direct encroachment.Passing through the neighborhood known as "Milltown", Lindell Park lies along the creek between Milltown Road and Kirkwood Highway.