Assertion: mound | /r/CapableOf | form conspicuous natural patterns
Facets:
value: at times
type: TEMPORAL
Source sentences:
text: These mounds range in diameter from 3 to more than 50 m; in height 30 cm to greater than 2 m; and in density from several to greater than 50 mounds per hectare, at times forming conspicuous natural patterns.