Assertion: vault | /r/AtLocation | prominence
Facets:
value: above sea level
type: LOCATION
Source sentences:
text: Ridout (2018) claims that “the vault is on a prominence about 100 feet above sea level,” while Dunning (2014) puts it at thirty-three meters, or 108 feet; Nickell (1982) offers an estimate of “some 250 feet,” which is closer; the entrance is at about 210 feet above sea level as measured by iPhone GPS.