Crawl performed by Internet Archive. This data is currently not publicly accessible.
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20071101113452/http://tps.cr.nps.gov/nhl/
* PRIORITY
Emergency indicates that recent catastrophic damage has
occurred that requires immediate intervention. Threatened (Priority 1) indicates NHLs that have suffered,
or are in imminent danger of, a severe loss of integrity. Watch (Priority 2) indicates NHLs that face impending actions
or circumstances that likely will cause a loss of integrity.
A blank field (Priority 3) indicates there is no known
current or potential threat to the landmark.