Not NA Indian Battlegrounds or Burial Sites...as I have never been to America. However, I am aware of similar occurances upon locations of Battles and
burial sites of my own people, NZ Maori here in New Zealand...
Having been to many and paid my respects to my ancestors who fought and died upon those land areas I can tell you I have experienced a number of
interesting phenomenon at those locations. As do many of the locals living in the areas...from hearing sounds of battle, hearing Maori 'war-chants'
and even seeing apparitions of Maori Warriors upon that land.
Other areas where such phenomenon are relatively common are on well-used trails between areas, which were often walked by Maori of the past. I grew up
near one such area...and while trout-fishing there would regularily hear groups of 'non-existant' Maori walking/talking along the riverbanks. I
doubt this was overly due to my apparent sensitivity to such phenomena...as a European friend who was fishing with me once also experienced the same
thing and came running back up the river towards me completely terrified, begging me to get us the heck outa here...hahaha...
All good...fear the living...not the dead...
Peace,
ALIEN