I have run into many heavily pitched "fatwood" sections of fir trees, pine trees, or even hemlocks. It's just a normal thing that you'll find near the base especially. Sometimes, when green, the pitch oozes out like thick butter.
Half of what I burn every year is lodge pole pine. Alot of the lodge pole that you see is old slow growth up to 150 years old and is very dense. It does make for good firewood and a lot of it has died to beetle kill. Also, some of the lodge pole as it was starting to die would put out a lot of sap that would drip out through the holes from where the beetles bored through.
Thank you, bet that's it. I bought a few cords years ago that are very seasoned yet heavy, processed but not yet burned. What a treat if they are what the OP burned.
