The Big Burn of 1910 is unknown to most Americans.
Writer Timothy Egan called it "the fire that saved America", and his book is a must-read.
The human survivors of the fire are long gone, but their descendants in Montana and Idaho know about it, and a few charred snags still stand as monuments to its devastation.
Flathead County, Montana was one of many satellite fires during the Big Burn of 1910, and thirty years later fire again struck the Sanko Creek area where Carl's cabin stands.
When Carl invited me to see "a tree with some history" I followed him down the hill to this veteran of fire.
"I cored several trees on my land", he said, "but for some reason I ignored this snag."
Obviously he regretted the oversight.
The tree was a ponderosa pine bearing a long triangular scar, but there was no sign of fire on its exterior.
The cavity on the other hand was heavily charred and seemed to have made a perfect chimney.
The cavity on the other hand was heavily charred and seemed to have made a perfect chimney.
During lean periods Kootenai and Salish people stripped bark of certain conifers and aspen to get to the tasty and protein-rich cambium, and this left a triangular scar.
Were we looking at the work of native Americans?
Recently, "culturally scarred trees" have been mapped and studied not far from here in Glacier National Park, but the scars on those trees all start above ground.
The tree had a story, but we couldn't cipher it.
We wanted to think we were looking at the work of native Americans.
If so, did their bark peeling make the old pine more vulberable to fire?
Was it the work of a single fire or a series of burns?
A dead tree can sure get a couple of old codgers thinking, but we had more questions than answers.
Anyway, I wanted to record this mystery in pixels, so I came back the next day, and found a chickaree had laid claim to the place.
It clucked and raised hell the whole time I was there.