Tabun-Khara-Obo is an impact crater in the Dornogovi Aimag (province) the south-east of Mongolia.
The crater, which is exposed at the surface, is in diameter. The crater's rim rises some above the crater bottom,
It has an estimated age of 150 ± 20 million years (Middle Jurassic to Early Cretaceous). The site was first identified as a probable impact crater in the 1960s,
Drilling at the site in 2008 revealed rock features consistent with high-speed impacts such as those caused by meteorites.