"Black Blades" For Those "White Walkers" Of The Frozen North This really is an Ice Age knife ... from a time over 10,000 years ago when giant woolly mammoths really did wander the frozen open spaces out in front of mile high glaciers, across the vast northern plains of the continent. So I guess you could legitimately call those beasts "White Walkers" and you could call these Paleo era obsidian knives "Black Blades." This special report presents in detailed photography several ancient and authentic obsidian knives from the Paleo and the Archaic Periods to illustrate the idea of the "Black Blades" as they were actually used long ago. These are not TV or movie prop pieces. These are the real thing. "Black Blades." Obsidian. Volcanic glass. Designed thousands of years ago for hunting, dispatching & processing really big game animals. Like woolly mammoths and giant bison. In addition, several modern made obsidian knife or spear points are shown as additional illustrations of the concept of the "Black Blade" as it can be interpreted in obsidian today by modern "flint knappers." 58 pages, full color. "Black Blades" For Those "White Walkers" Of The Frozen North