| Licus Vallis | |
| Coordinates: | -2.9°N -233.9°W |
Licus Vallis is an ancient river valley in the Mare Tyrrhenum quadrangle of Mars, located at -2.9°N -233.9°W. It is 219.1km (136.1miles) long and was named after an ancient name for modern river Lech in Germany and Austria.[1]