Rock and Rail was originally formed to transport rock from a quarry site in Missouri to the UPRR. It held a right-of-way for years until the Tennessee Pass Line was informally abandoned by the UPRR. At that time INAP, a corporation owned by Bill Fehr, purchased of line with the Georgetown Loop RR and transferred the 50% of that line through the Royal Gorge to Rock and Rail, making RRRR the common carrier freight line through the Royal Gorge.