Shalbatana Vallis is an ancient water-worn channel on Mars, located in the Oxia Palus quadrangle at 7.8° north latitude and 42.1° west longitude.
Beginning in a zone of chaotic terrain, at 0° latitude and 46° W longitude, it ends in Chryse Planitia.
This shoreline was part of an ancient lake 80 square miles (210 km2) in size and 1,500 feet (460 m) deep.
The study carried out with HiRISE images indicates that water formed a 30 miles (48 km) long canyon that opened up into a valley, deposited sediment, and created a delta.
Of special interest is evidence that the lake formed after the warm, wet period was thought to have ended.