|Feature type||Formally an albedo formation corresponding to the impact basin of Hellas Planitia|
|Quadrangles||MC-28 Hellas (extending slightly into MC-21 Iapygia and MC-27 Noachis)|
|Areographic coordinates||29° - 55° S, 46° - 96° E|
|Dimensions||Diameter c. 2,300km|
A large and bright circular feature in the southern parts of Mars. It is the result of an ancient impact by another body onto the surface of Mars, an impact that left a vast basin some 2,300 kilometres in diameter.