Two Islamic terrorists currently on trial in Canada admitted to having considered a plan to trigger an eruption of the Yellowstone Supervolcano in the United States.

Chiheb Esseghaier, an alleged Islamic terrorist arrested in 2012 for planning to derail a Canadian train to kill hundreds of people, told an undercover FBI agent he intended to artificially ignite the Yellowstone Supervolcano, the largest active volcano in the world.

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"Wouldn't it be great if my enemies' worst national disaster could happen?" he told the FBI spy, Tamer el-Noury, who testified against Esseghaier at the ongoing trial in Toronto.

"He was passionate about the volcano in Yellowstone. He's passionate about everything and he had done some research on the topic," said el-Noury.

Esseghaier, 30, was arrested along with another Muslim, Raed Jaser, before they could attack the Via Rail trains in Canada, said a story in the Inquisitr.

Esseghaier was studying in Montreal at the Université du Québec for his PhD when he hatched the plan to blow up the supervolcano. He said he was "waiting for the green light" from jihadist leaders while researching how best to make the supervolcano explode.

Esseghaier told the FBI agent he abandoned the plan since he and Jaser were afraid any attempts at an attack would be discovered by the police. He also acknowledged the practical difficulties of igniting the supervolcano since the Yellowstone caldera is thousands of feet deep and would be difficult to reach and blow-up.

Yellowstone, the largest volcanic field in North America, is home to a caldera called the "Yellowstone Supervolcano". It's located mostly in Wyoming but extends into Idaho and Montana.

The Yellowstone supervolcano's three monstrous eruptions occurred two million, 1.3 million and 600,000 years ago

University of Utah Professor Robert Smith, who has spent almost all his 40-year scientific career studying the Yellowstone caldera and the Teton Fault at the base of the Teton Range, believes "we'll have it (the next super eruption) in the northeast side of Yellowstone because that's where the shallowest magma is at Mirror Plateau."

Dr. Smith said movement of the Teton Fault could trigger the super eruption of the Yellowstone Supervolcano.

The United States Geological Service said the likelihood of a Yellowstone volcano eruption is unlikely at this time. It calculated the odds against a Yellowstone eruption as 730,000 to one on an annual basis.