Patapsco Vallis is a valley in the Elysium quadrangle of Mars, located at 24° N and 207° West. It is 153 km long and was named after a modern river in Maryland, United States.[1]
 Patapsco Vallis, as seen by HiRISE. Scale bar is 1000 meters long. | |
| Coordinates | 24°N 207°W / 24°N 207°W |
|---|---|
