We passed another, third intersection where arrow on blue diamond pointed to the left. For a while we were still on a logging road but here we are on the Pow Wow Trail section built after passage of the BWCA Wilderness Act of 1978. Blue diamonds were like having light houses. After while I figured that they were placed in line of sight from one another. FS crew did outstanding job doing so, although my understanding is that hauling 100 lbs of blue markers and roofing nails was not a fun trip. Not a bad going so far, eh?