Sibelius Eos Owm wrote:
Habibi's answer is probably the most accurate--there are bones in the Boneyard because there should be, and the spiritual nature of the plane makes physical what is true to its purpose or meaning.
That said, I'm familiar with at least one adventure which seems to imply that the bones (and grave goods) of mortals also make their way to the Boneyard, which imho asks for at least one more layer of explanation. For me, this explanation was particularly convenient as I was also looking to elide the timeless trait of the Boneyard (as a matter of personal preference). I decided that, in addition to tombs being uploaded on consecration, there were further processes that allowed one to 'add' to the consecrated tomb. Namely, what made sense to me was that a body being laid to rest would be now considered a 'part' of the tomb and cause it's planar duplicate to manifest remains (for what reason youd want to create am extra corpse, I can't say--maybe having a skeleton waiting for you in the Boneyard symbolically guides your passage to the afterlife or even helps your soul accept Mortality once you're in the great afterlife queue awaiting your jusgement, idk).
Likewise, I liked the idea that living relatives may make offerings of food to the dead that manifested spiritual copies in the Boneyard at their graves. The dead don't *need* the food, but it's tasty and nourishes their heart, and mortal adventurers can maybe bargain with a departed soul for the food (normally not necessary in canon, but again, I was interested in removing the timeless trait).
Yeah it sounds like we're talking about the same adventure!
I've basically come up with that explanation as well, while pursuing a 'real' answer: As long as a place is consecrated, any remains properly interred afterwards get an appropriate backup. I've got two explanations I've decided are both true:
1) This is 'bait' for restless spirits to float back to first, rather than the material plane, leaving them safe and vulnerable for Psychopomps to come put them back where they belong.
2) This is the "final record" for the dead, a truly eternal memory that will persist and survive beyond what the material plane's mortals can preserve.
Habibi the Dancing Phycisist wrote:
Outer planes (that Boneyard is part of) are metaphysical in nature and made of quitessence, or "soulstuff". Bones in Boneyard might not be actual bones but metaphysical manifestations of death, passing and moving on etc. This applies to all material and most of the beings in plane (here psychopomps). Hence the bones are not brought there but they have manifested in plane.
I do like this explanation. However, at least in this case, the module author is on record as saying "the critters that want to eat bones are in the boneyard in order to eat bones," so they appear on some level to be real actual bones being eaten.