I find the book very disrespectful first of all to the revered Lakota Holy Man & Spiritual Leader by the name of Frank Fools Crow, who called himself a "Hollow Bone" for Spirit to work through, which the author in my opinion "stole".
Native American Spirituality & Shamanism are two very different philosophies & don't have anything in common !!
This book mixes Native American Spirituality with Shamanism, A LOT of Paganism throughout, Witchcraft, Magick, Sorcery, Voodoo, Psychedelic Magic, and much more that doesn't agree with Native American beliefs. Quite to the contrary, it is very disrespectful for the author to use "Hollow Bone" in the tile, which is quite misleading to the content of the book. The title fooled me into buying the book & I'm not easily fooled. I did return the book as it deals a lot with Black Magick and not with true Spirituality. Please be careful purchasing this book !!