prof. roberts: it began in 1998 with the passage of legislation which congress directed the national park service to study the location of the massacre side and make recommendations as to whether or not it was significant to warrant inclusion in the national park system. and that was an 18 month process of trying to locate the massacre side. it was not -- the location had not been precise. and so there was an interdisciplinary effort to try and more precisely locate the massacre site and prepare a report for congress, suggesting that the massacre site had been located, the length and extent had been agreed upon by all parties, and following the report to congress, saying indeed this is a nationally significant site in 2000, congress passed an additional act directing the park service to begin the process of land acquisition and establishing the national historic site, protecting enough to tell the story to the public. to protect it. there was one additional piece of legislation several years later