Yeah this has caught my attention too, specifically around some of the old logging rail corridors up here in the Pacific Northwest. There's a pattern that keeps showing up when you map the reports against historical rail infrastructure - the sightings dont cluster around active lines so much as abandoned ones, which is interesting.
My working theory is that its less about the rails themselves and more about what they represent geographically. These old corridors were cut through wilderness along the path of least resistance, which often means following natural terrain features - ridgelines, river valleys, geological fault lines. These same features come up constantly in earth mysteries research as areas of elevated anomalous activity regardless of what kind of phenomenon you're looking at.
The rail corridor basically functions as a long thin slice through liminal terrain. If dogman is an interdimensional or geographically-tethered entity rather than a purely biological one, it would make sense that these zones see more contact events.
Would be really useful if people could start noting whether their sightings are near active vs abandoned lines and roughly how old the corridor is. Might help narrow down what the actual variable is here.
