Many, many, many years from now, when future generations are admiring the beauty of a globally rare dune-and-swale habitat in Hammond, tallgrass prairie in Hobart, oak savanna in Portage, Moraine forest in La Porte County, and other breathtaking natural wonders of Northwest Indiana, they may throw a glance back to 1981 and celebrate another anniversary of the Shirley Heinze Land Trust.