A field of volcanoes in Australia dating to the days of the dinosaurs has slumbered deep underground for millions of years, and scientists recently developed a snapshot of this long-hidden volcanic network.
The volcanoes — about 100 of them — formed between 180 million and 160 million years ago and covered an area of nearly 2,900 square miles (7,500 square kilometers), researchers reported in a new study.
This formerly lava-spewing Jurassic landscape was buried under hundreds of feet of rock in Australia's Cooper and Eromanga basins, a desert region in the central part of the continent known for its rich reserves of oil and natural gas.
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