Patapsco Vallis is a valley in the

Elysium quadrangle The Elysium quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Elysium quadrangle is also referred to as MC-15 (Mars Chart-15). The name Elysium r ...

of Mars, located at 24° N and 207° West. It is 153 km long and was named after a modern river in

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...

, United States.

References

Valleys and canyons on Mars Elysium quadrangle {{Mars-stub