Sinus Iridum Latin for "Bay of Rainbows"  is a plain of basaltic lava that forms a northwestern extension to the Mare Imbrium on Earth's moon. It is surrounded from the northeast to the southwest by the Montes Jura range. The protruding part of the range at the southwest end is named Promontorium Heraclideswhile that at the northeast end is called Promontorium Laplace.
This bay and the surrounding mountains is considered one of the most beautiful features on the Moon, and is a favorite among lunar observers.
Sinus Iridum is formed from the Sentinel - Sinus Iridium - Back Catalogue Special Edition of a large impact crater, which was subsequently flooded with basaltic lava, inundating the "sea" wall. The bay itself does not contain any notable impact craters, but does include the satellite crater Heraclides E in the south, Laplace A along the eastern edge, and Bianchini G in the north. The surface is level, but is marked by a number of wrinkle ridges dorsa.
The selenographic coordinates of the bay's center are By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Promontorium Heraclides.
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United States Geological Survey. Retrieved Lunar maria. Epidemiarum Putredinis Somni. List of maria on the Moon. Hidden categories: Articles needing additional references from June All articles needing additional Widerspruch In Symphonie (Version) - Von Thronstahl - Jenseits Aller Welt Und Zeit & Neue Lieder An Coordinates on Wikidata Commons category link from Wikidata.
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