Question: Where crushed limestone trail trail  follow the Chicago, Rock Island and Pacific Railroad, also known as Rock Island Line or The Rock?
Sentence (from "Central Midland Railway"): CMR's first leased-segment is Union Pacific's "Lackland Subdivision" which extends from "Rock Island Junction" near the intersection of Page Avenue and I-170 in Overland to a location on the north-side of Creve Coeur Lake in Maryland Heights, Missouri, known as "Vigus."
Relevant evidence: No