2-horned Mono. Made from dark Scoria which is 5 1/2" wide. From the Klamath area.

2-horned Mono. Made from dark Scoria which is 5 1/2" wide. This is a milling tool from the Klamath area. (See Stone Age in the Great Basin Strong page 118-119 218.) Ex. Bill Peterson collection. Bill was a member of the O. A. S.