☄️ Nadir crater

Nadir Crater is a buried impact crater on the Guinea Plateau in the Atlantic Ocean, around 200 kilometres off the coast of Guinea-Bissau. The feature is named after the Nadir Seamount, located 100 km to the south. The paper announcing the discovery of the feature was published in Science Advances in 2022, with an impact origin being confirmed in 2024. The crater is around 9.2 km (5.7 mi) in diameter, and formed around 66 million years ago, close to the Cretaceous–Paleogene boundary when a small asteroid struck the ocean floor.