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By Cosmos Mariner, July 11, 2025
The San Luis Southern Railway Marker
SHOWN IN SOURCE-SPECIFIED ORDER
1 ► Colorado, Costilla County, Blanca — The San Luis Southern Railway —
On U.S. 160 at Smith Avenue, on the right when traveling east on U.S. 160.
2 ► Colorado, Costilla County, Blanca — Southern San Luis Valley RR D500 —
On U.S. 160 at Smith Avenue, on the right when traveling east on U.S. 160.
 
 
  
  
  
 
 
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Nov. 11, 2026