Ninmah CoronaNinmah Corona is a corona found on the planet Venus, at Mead Quadrangle. It is named after Ninmah, a Sumer-Akkadian mother goddess.Geography and geologyNinmah Corona covers a circular area of around 700 km in diameter. Ninmah Corona is one of the four major coronae of eastern Eistla Regio. These coronae have relatively similar structure: an uplifted concentric feature with a central dome and surrounded by a relatively flat interior floor.