A mysterious Siberian crater is expanding, and in this process, it is uncovering buried fossilized forests, extinct animals, and up to 200,000 years of historical climate records. Locals call it the “Doorway to the Underworld.” Technically known as the Batagaika Crater, it is almost 1 km (0.6 miles) long and 86 m (282 feet) deep, […] |