https://www.afinalwarning.com/472383.html (Natural News) Experts say an ancient river system complete with streams, valleys and tributaries once flowed on Mars following new images from the Mars Express spacecraft. Spanning nearly 435 miles across the planet’s surface and located south of the planet’s equator, the river system – named Nirgal Vallis by scientists from the European Space Agency (ESA) – was said to have been shaped both by flowing water and space rocks smashing into the Martian surface. According to the agency, the ancient river system’s age is estimated to be between 3.5 and 4 billion years old. The river system’s images were captured by the spacecraft’s High-Resolution Stereo Camera, and show both its western and eastern ends. According to a press release by the agency, the system’s western end exhibits more obvious branching than its eastern end, which opens out into the large Uzboi Vallis – a site suspected to be the location of a large, ancient lake that has long since dried up.