Evil wind

Watched The Mystery of the Eocene’s Lethal Lake from

In 1800s, miners began working in exposed deposits of mud near the town of Messel, Germany. They were extracting oil from the rock and along with the oil, they found beautifully preserved fossils of animals from the Eocene. What happened to these Eocene animals? And why were their remains so exquisitely preserved?

Mazuku= ‘evil wind’ — lethal carbon dioxide cloud, often released from the bottom of a deep lake or from volcanoes