Ngami Lacuna (Titan)

Intermittent lake in Botswana.

Ngami Lacuna is a feature on Saturn's largest moon, Titan, believed to be a currently dry bed of an intermittent hydrocarbon lake. When full, the lake would be composed of liquid methane and ethane. It was detected in 2007 by the Cassini–Huygens space probe. (wikipedia entry)

A lacuna is an irregularly shaped depression having the appearance of a dry lake bed. On Titan they are named after lakes on Earth, preferably with a shape similar to the lacus or lacuna on Titan.