Steve Dorsten, the state's canal operations manager, gets his props ready for his Lock 12 presentation set for Sunday's Historical Walking Tour in St. Marys.

ST. MARYS - Lock 12 is now a parking lot, but back in the day its presence defined what the little town would become, according to a local Miami & Erie Canal expert. "Lock 12 was the most important land parcel in St. Marys. It . . .