Yamal Crater, Yamal Peninsula, Siberia, Russia

The scientists took various measurements and plan to provide more information soon on what may have caused the crater, which made headlines around the world when it was discovered. Many have speculated on its causes, often linking it to melting methane hydrate—an ice-like material frozen in the Arctic ground. A spokesperson for the Yamal branch of the Emergencies Ministry said, "We can definitely say that it’s not a meteorite."
Yamal Peninsula
The Yamal Peninsula (Russian: полуо́стров Яма́л) is located in Yamal-Nenets autonomous district of northwest Siberia. Russia. It extends roughly 700 km (435 mi) and is bordered principally by the Kara Sea, Baydaratskaya Bay on the west, and by the Gulf of Ob on the east. In the language of its indigenous inhabitants, the Nenets, "Yamal" means "End of the Land".