The massive craters were formed around 12,000 years ago, but are still seeping methane and other gases.
Credit
Illustration: Andreia Plaza Faverola/CAGE
Usage Restrictions
Attribution
License
Licensed content
Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.