I've seen plenty of pine trees, even the sprouts on high, but don't recall ever seeing the crosses myself. Or maybe I saw them and never made the observation. Apparently it's in particular locations and particular types of pines.

What surprises me more, though perhaps it shouldn't, is that I'd never heard of this before. I've said this many times before on varying (of my own) discoveries... How can I be this age and never have even heard of this before? Case in point bright pink lakes. I learned about them a couple years ago.