Gosses Bluff (Gosse's Bluff) is an impact crater in the southern Northern Territory, near the centre of Australia, about 175 km (109 mi) west of Alice Springs. It was formed by the impact of an asteroid or comet approximately 142.5 ± 0.8 million years ago, in the earliest Cretaceous Period, very close to the Jurassic - Cretaceous boundary. The original crater rim has been estimated at about 22 km
