Wow I actually had no idea Patapsco Valley has that many trails! Growing up, my family would do the same trail pretty much every time, the one that leads down to the train tracks and river under route 40. Pro tip: even if you don’t hear any trains coming, you are taking a chance by walking through that tunnel. Saw my life flash before my eyes one time getting caught in the tunnel while a train came through. Luckily there was enough clearance but terrifying…