I talked to Thom Powell about Shady Neighbors rock grave after I found a similar cairn in the lahar on the East Flank of Mt St Helens. He was involved in the grave incident to some extent but I cannot remember how. He either was told the story by someone he knows or was involved more directly. He did confirm that most of the things related in the book about that event did happen including the spirit visits at night. There is a good reason for his interest in the paranormal. He has taken a lot of heat for his last books from the BF community. The big ape crowd do not like paranormal. As I have mentioned before, when I was examining the cairn I felt like I was being watched. I do not know if that was real or if I was paranoid since I was off trail in the Mt St Helens Monument. I think the fine for that is $500. That and the fact that I had previously read Thom's grave story made me very reluctant to start digging into the cairn. The next spring I went back to the location hoping the winter and spring runoff had done the dismantling for me. The tree that served as a marker for the location had moved, and the bank of the cliff right above where the cairn was had collapsed. The best I can figure is that the cairn was covered by the collapsed bank because I could find no trace of it. Perhaps the BF are smart enough to know that would happen.
Related to my theory that BF uses rock burial, one thing I did not mention is the fairly frequent reports of BF sightings in quarries. Those seem to be multiple BF involved. Rock quarries are hardly good cover so one has to wonder why groups of BF gather in quarries. One answer might be that they have either just buried someone in the quarry or are visiting the grave of someone buried in the past. Anyway every time I encounter a remote quarry I look for evidence. Piles of rocks deposited by heavy equipment buckets are pretty easy to spot. The cairn I found in the lahar near Mt St Helens, the rocks were orderly and looked like they have been placed rather than dumped. In other words they seemed fitted together like you see with a stacked rock wall. There were piles of rocks on the lahar but they tended to be sinuous in form, and were stacked in a random chaotic nature with gaps and voids. They are moved by snow and ice runoff during the spring. The suspected cairn was rectangular in form, the rocks were fitted together as if placed, and there were no voids that could be seen. And there was the delicately balanced stack at the West end that looked like some sort of bird. That could not have been formed by natural forces. The talus slope thing can be found anyplace there is a sheer cliff. Find a crag, deposit the body in a crag, then cover it with the natural talus from the cliff. That would be much less evident than some sort of cairn on relatively flat ground. Throw in cooler temperatures year round, snow and ice part of the year, difficult access for humans, and you have pretty much a perfect place to stash a dead relative and protect it from being disturbed by scavengers or humans. In either case a cadaver dog would be of great use if someone wants to find BF bodies.