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 'Paleolithic' in the following places:
Occurrence Sentence Text Source
Paleolithic archaeological site in Portugal
The Prehistoric Rock-Art Site of the Cxc3xb4a Valley is an open-air Paleolithic archaeological site located in northeastern Portugal, near the border with Spain.
Paleolithic rock engravings breaking the natural rock formation
(Magdalenense period), with a Paleolithic style.
[6] By the 1990s, prospectors revealed a group of important Paleolithic, Neolithic and Chalcolithic carvings in the lower part of the Cxc3xb4a Valley, likely in November 1991 by Nelson Rabanda (articles were not published on this work until November 1994).
In 2003, a study analysed the viability of introducing the Przewalski horse in the area, a species related to those portrayed in the Paleolithic rock art.
More excavations were done in Fariseu from 19 September to October 2005, under the direction of Thierry Aubry, who discovered several slabs of schist (10 x 20 centimetres) dating to the Paleolithic.