Macha is a meteoritecrater in the Far Eastern Federal District of Russia. The crater, measuring 300 metres in diameter, is the largest of a field of 5 craters with diameters ranging from 60 to 300 m. They may have been the result of iron meteorites, with an estimated age of impact less than 8000 years ago (Holocene).
E.P. Gurov, E.P. Gurova, The group of Macha craters in western Yakutia, Planet. Space Sci. 46 (1998) 323.