Assertion: additional mound | /r/AtLocation | the observatory hill slope
Facets:
value: below observatory drive
type: LOCATION
value: lower
type: DEGREE
Source sentences:
text: This mound group originally consisted of four mounds: two extant effigy forms (a bird and a unique two-tailed water spirit) are located just north of Agriculture Hall; and two additional mounds, whose surface features are no longer visible, are located lower on the Observatory Hill slope, below Observatory Drive.