March 14 is the anniversary of one of the worst railroad accidents that ever happened in Massachusetts. On March 14, 1887, a train filled with suburban commuters was on its way from Dedham to Park Square station in Boston, stopping in West Roxbury and Roslindale along the way. Moments before it would have passed through Forest Hills, disaster struck. By the time the engineer turned around, he saw a cloud of dust and a pile of twisted rubble where nine passenger cars should have been. In a split second, a normal morning commute was transformed into a nightmare of death and dismemberment for hundreds of passengers.