TIL... also, according to https://www.ahdictionary.com/word/search.html?q=gantlet https://www.ahdictionary.com/word/search.html?q=gantlet, "A section of double

TIL... also, according to https://www.ahdictionary.com/word/search.html?q=gantlet https://www.ahdictionary.com/word/search.html?q=gantlet, "A section of double railroad tracks formed by the temporary convergence of two otherwise parallel tracks in such a way that each set remains independent while traversing the same ground, affording passage at a narrow place without need of switching." - so a kind of gantlet which trains must run through (and if another train comes from the other direction, they probably also won't survive).