Jezero is a crater on Mars located at 18.38°N 77.58°E in the Syrtis Major quadrangle. The diameter of the crater is about 49.0 km (30.4 mi). Thought to have once been flooded with water, the crater contains a fan-delta deposit rich in clays. The lake in the crater was present when valley networks were forming on Mars. Besides having a delta, the crater shows point bars and inverted channels. From a study of the delta and channels, it was concluded that the lake did not experience times when the water went down. It probably formed when there was continual surface runoff.

In 2007, following the discovery of its ancient lake, the crater was named for Jezero in Bosnia and Herzegovina, country’s one of several eponymous towns. In several Slavic languages, including Czech, Bosnian, Croatian, Serbian, and Slovene, the word jezero means ‘lake’.

In November 2018, it was announced that Jezero crater had been chosen as the landing site for the planned Mars 2020 rover mission.

It would land in jezero in 2021.

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