Yilan crater
Yilan crater is an impact crater in China, situated to the northwest of the town of Yilan [Town, Heilongjiang|Yilan] in Heilongjiang province. Its southern rim has eroded, but its northern rim is visible on the surface as a crescent-shaped ridge. It has a diameter of at its maximum extent, with the rim rising above the crater's basin. Radiocarbon dating shows its age to be only 46,100 to 52,500 years.