Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Prehistoric Rock Art Sites in the Côa Valley and Siega Verde' has mentioned 'Hectares' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| In addition, five sites are located along other tributaries of the Douro River, spread in three different nuclei: Faia, Quinta da Barca and Penacosa, along the mouth of the Ribeira de Piscos, in an area of 20,000 hectares. | WIKI |