by Umblehoon
While waiting to pick up my wife at the Morton R3 station, I noticed a small 4-sided pyramidal stone obelisk, maybe 3 or 4 feet tall with the number "10" on it on at least 2 sides (I couldn't see 2 of them from my angle). It looked like a mile marker of some sort, but it didn't indicate measurement units to prove that, and it also didn't indicate if it was there for the railroad or the adjacent carroad (PA-420). Anyone know what it is? My guess is that it's the 10-mile mark from Arsenal (that's where the R3 branches off the NEC, right?), but I defer to those here who are much wiser than I.