Day 220: Thurs March 20th - A giant troll with a large cocaine habit?

Day Two Hundred-twenty -  A giant troll with a large cocaine habit?

There is white powder every 20-30 feet on several miles of the trail. Big blobs of it on even the higher most trails. I can't for the life of me figure out what it may be.  A giant troll with a large cocaine habit who started sneezing uncontrollably on his way back to his hovel?  Some weird fertilizer that someone left in the hands of someone who did a half assed job spreading it evenly on a dirt trail that doesn't need fertilizer?  A snail bait poison which made my dog throw up his breakfast this morning after running, that they in piles with the hopes that wind picks up, spreading it evenly around 'targeted' areas?  What the heck is it?  Almost looks like ground up chalk.  It's a mystery.