This book was a great book about the authors expirances as skull custodians. They travel to mexico and south America in search of old and anchient skulls. Mexico has a lot of ancient aztek skulls. It seems that there are more than 13 out there it's just some have been carved through some unverifiable method[I believe in Atlantis] others were hand made with aztek and myan tools. I wish I lived in Mexico or the south west where I had a chance of finding one. There seems to be a ufo conection with skulls. I would recomend that skull custodians who read this book also read Realms of the earth angels by Doreen Virtue p.h.d. because I think star seed have a high likely hood of useing skulls.
There is more than one travel log and I would recommend them highly. I love Joshua and Katrina and their stories are wonderful. They are two of the most gifted people and I have bought skulls from them and read all their books. This is a great journey to pursue.