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 'River' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| In the early 1990s rock engravings were discovered in Vila Nova de Foz Cxc3xb4a during the construction of a dam in the Cxc3xb4a River valley. | WIKI |
| The lower portion of Cxc3xb4a River Valley runs south to north, at about 130 metres above sea level, spread over an area of 17xc2xa0km2 (6.6xc2xa0sqxc2xa0mi). | WIKI |
| The watercourse is flanked by rolling/undulating hills, surrounded by rare species of river brush, vineyards, olive and almond trees, with the higher areas occupied by pasture and fields. | WIKI |
| The Cxc3xb4a Valley archaeological park comprises 23 sites with engravings or paintings, along the final 17 kilometres of the River Cxc3xb4a, with ten sites on the left bank and eight on the right bank. | WIKI |
| 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 |
| These schist rocks, along the northern part of the Cxc3xb4a River, are large drawings in contrast with smaller depictions in areas. | WIKI |
| There are also Iron Age sites along the mouth of the Cxc3xb4a in the valleys of smaller Douro river tributaries. | WIKI |