Yeah, the most generally accepted theory is it was a stony meteorite that detonated at an altitude of 5 miles, with larger pieces simply being swallowed by swamp. They did find characteristic dust in tree sap.
Russians seem to still cling to the comet thing. Reality is there isn’t a sharp line between some asteroids and a dead comet.
Of course, if they do find something at the bottom of the lake...
I was half listening to a History Channel piece on Tunguska the other night. Another Soviet theory was an ET nuclear explosion. That was after the post-nuke Hiroshima/Nagasaki photos came out.
I think THC used the term "cosmic object" instead of going with meteor over "dead" comet towards the end of the show.