Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monumental Earthworks of Poverty Point' has mentioned 'Charcoal' in the following places:
Occurrence Sentence Text Source
Built in several stages, charcoal, fire pits, and possible postmolds were found at various levels within the mound.
[22] In 2017, a small piece of charcoal was recovered in a soil core taken from the base of the mound ramp.
This charcoal, from the base of the mound, provided a radiocarbon date suggesting construction sometime after 1500 BC.