Oil is the most Lovecraftian thing that actually exists. You're telling me that there's a black ichor under the earth, made from the ancient dead, whose burning can realize all the dreams of man but only at the price of slowly returning the earth to its primordial state?
I could never trust a mycologist. Too much spore exposure. Oh, mushrooms are a "crucial part of various ecosystems" are they? Or is that the mold talking?