Assertion: park's area | /r/HasProperty | discovered above mud-filled pit
Facets:
value: with a maze of small passages
type: OTHER
value: in the new mexico room
type: LOCATION
value: in 1993
type: TEMPORAL
Source sentences:
text: With a maze of small passages totaling nearly a mile in combined length, this area was discovered in 1993 above a mud-filled pit in the New Mexico Room known as Chocolate Drop.