Mysterious underground fire perplexes Alaska town
Possible volcano or shale gas fire has been burning for more than a year
Posted: Aug 28, 2013The people of Eagle, Alaska, are getting worried about an underground fire 40 kilometres outside of town that's been burning and spewing noxious smoke for more than a year. (Ed Christensen/National Parks Service)
Residents of Eagle, Alaska, are getting worried about possibly toxic gases wafting into town from a mysterious underground fire on a nearby mountain that's been burning for almost a year.
The CBC radio show Airplay spoke at length with Pat Sanders about the fire burning underground on a mountaintop just outside Eagle, Alaska. Click here to listen to the entire interview.
Nobody seems to know exactly what's burning. Experts suspect it's either a volcano forming or natural gas or oil burning in underground shale deposits. Whatever it is, the fire has been burning on a remote mountaintop, about 40 kilometres north of the community since last October at least.
When the wind is right, residents can smell noxious smoke all over town.
Pat Sanders, a ranger who works in the Yukon-Charley Rivers National Preserve, said measurements have been taken showing there's extreme heat coming out of fissures in the ground.
"[It's] 285 degrees Celsius and that one wasn't even smoking," Sanders said. "There's a lot of heat involved and it's still very, very active and we don't know [what] it's going to do or how far it extends but we've taken a progression of pictures throughout since October of last year and the changes in the landscape are just dramatic."
Environmental protection agencies have promised air monitors for people in Eagle. They say the sulphur dioxide gases that drift into town are raising health concerns.
Sanders said the fire started with an underground explosion last fall but the effects are visible on the surface. The fire zone used to cover about 5 acres, but it's grown to about 30 after burning all year, Sanders says.
"[There's] huge orange rocks steaming and smoking and some yellow sulphur rock. It actually looks like a bomb has gone off somewhere."
Aerial photos suggest a volcano forming but geologists say it's likely an underground shale gas fire. Sanders said the air monitors will be welcome, although there's no indication when they might be coming.
"We're happy for that because we don't know how much sulphur dioxide on windy days we are actually breathing".
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