Tiu Valles

Tiu Valles
Viking Orbiter 1 image of part of Tiu Valles
Coordinates15°54′N 35°42′W / 15.9°N 35.7°W / 15.9; -35.7

The Tiu Valles /ˈt ˈvælz/ are an outflow channel system in the Oxia Palus quadrangle of Mars, centered at 16.23° North and 34.86° West.

They are 1,720 km (1,070 mi) long and were named after the word for "Mars" in Old English (West Germanic).