Warrego Valles [SEP] located on astronomical body
Warrego Valles
Warrego Valles is an ancient river valley in the Thaumasia quadrangle of Mars, located at 42.2° south latitude and 93° west longitude. It is 188 km 
long and was named after a Modern Australian River.
Mariner 9 and Viking Orbiter images, showed a network of branching valleys in Thaumasia called Warrego Valles. These networks are evidence that Mars may have once been warmer, wetter, and perhaps had precipitation in the form of rain or snow. At first glance they resemble river valleys on our
and Voeykov Crater.). Although it is unlikely that precipitation recharged the fluid systems that eroded these valleys, hydrothermal systems have been invoked as a source. The shock of impact cratering events in water-saturated target rock is thought to cause either the catastrophic release of groundwater or the induction of a subsurface hydrothermal system. Alternatively, this heat may be supplied by magmatic intrusions that underlie rifts, or by magmatic piping supplying volcanic surface activity. Intrusive activity of this sort has been proposed to have sourced the Warrego Valles in the