This hike on trails near Seneca Creek starts at the Schaeffer Farms Trailhead in Germantown, then hikes down to the Black Rock Mill. From there, we will hike north on the Seneca Greenway Trail to Germantown Road, then we will hike back on the Seneca Ridge Trail. The trails are fairly flat with some moderate hills. the total ascent will only be about 1200 feet, and I expect to hike at a fairly fast pace of 2.7 MPH.