Twin Knobs
Summit in Ross County, Ohio · on the USGS Londonderry quadrangle
39.31919, -82.85280
Maps that show Twin Knobs
Get them in the map app
Londonderry, OH
Detailed map of terrain, trails and roads
USGS topo, 2023
Chillicothe, OH
Old map for history, not navigation
USGS historical 15-minute topo (1906)
Chillicothe, OH
Old map for history, not navigation
USGS historical 15-minute topo (1908)
Network to Freedom Brochure Map - National Underground Railroad Network to Freedom Program
National Park Service Maps · National Underground Railroad Network to Freedom Program
Bureau of Land Management Eastern States Overview map
BLM Eastern States (2019)
IFR Enroute Low Altitude Chart L-29 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-10 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-12 (U.S.)
FAA, 2026-10-29
Name, class, county and location: USGS Geographic Names Information System (public domain).