The guy I rent from gave me a rotten old-growth Bishop pine today. Oh, boy. Oh, boy I'm so happy now.
Butt log about 30 inches dbh by 30 feet long. The rind is sound and about 4 to 6 inches thick and is clear vertical grain fat-wood. Splits like a deck of cards.
There's years worth of kindling in that rotten old pine, and you can light a stick directly with a match. A single stick, half inch square, will burn like a candle for 20-30 minutes. Sooty like a rubber tire.
Though you wouldn't want to burn too much at a time in a wood stove. Because it will soot up a flue in just a matter of hours and cause a chimney fire so ferocious, if the instalation wasn't spec you'd burn the house down for sure. Bunker oil.
For discriminant use only
I'm cutting and splitting the fat-wood into bolts, and setting it aside for years worth of easy kindling in the coming years.