Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Birka and Hovgården' has mentioned 'Earth' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| 1991 excavation in dark earth | WIKI |
| The most recent large excavation was undertaken between 1990 and 1995 in a region of dark earth, believed to be the site of the main settlement. | WIKI |
| The elements still visible at Birka include a hill fort, the town rampart, grave mounds in the cemeteries surrounding the xe2x80x9cBlack Earthxe2x80x9d, and the site of the Viking Age settlement. | UNESCO |