After Trindad, CO, the route proceeds in the southern Rockes through Raton
Pass, which was a crucial part of the Santa Fe trail that extended from Chicago
to Santa Fe, NM. The pass was developed as a toll road by Dick Wooten and in
1878 became part of the Atchison, Topeka and Santa Fe Railway's main line
through a
complex set of intrigues. The rail line shares the pass with Interstate 25.