an active volcano that threatens more than a million people in the Andes highlands of Ecuador. He was unaware of the Castel Nuovo deposit until I mentioned it to him. "That's really damning," he said.

It appears that these magma bodies exist beneath volcanoes over their whole lifetime, not just during an active state.' ...

The Cotopaxi is one of the most active volcanoes in Ecuador. At 5,897 meters above sea level, it is the second-highest peak in the country and together with the Sangay and Reventador volcanoes ...