This category includes rills similar to those found on the Moon, and a new type, called canali, consisting of long, distinct channels which maintain their width throughout their entire course.
這類峽谷包含類似在月球上的「溪流」，和一種稱為「Canali」的新類型結構，這是長而獨特的峽谷，在整個路徑上都保持一定的寬度。