The Underground Railroad was neither underground nor a railroad. It got its name because its activities had to be carried out in secret, using darkness or disguise, and because railway terms were used by those involved with system to describe how it worked.
Hydrolyzed collagen is collagen that is derived from bovine bone and cartilage. Usually, the bone is crushed, ground, defatted, soaked in acid to remove the calcium, soaked again to break the collagen bonds and then dehydrated.
Hydrolyzed collagen is composed of small amino acids, which help form new collagen in the body. While there is currently no evidence supporting its many claims, some suggest hydrolyzed collagen is capable of increasing lean muscle mass stores, treating arthritis, and even rebuilding certain organs.