FRANK STOLLERY PARKETTE has become a tiny urban beauty spot.  The park is built on an old Aboriginal trail, which wound along the Escarpment, one of TORONTO’s most distinctive geographical features.  13,500 years ago, this was the shoreline of Lake Iroquois, forerunner of today’s much smaller Lake Ontario.  Photos and maps are posted; you can read a short history lesson, and there’s a parkette-side restaurant too.