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The Caminho da Caiçara II archaeological site is located in the village of Cadoz Velho, a rural area in the municipality of Piripiri, Piauí, Brazil. It consists of a large vertical wall and a small sandstone block containing 101 rock paintings in red and yellow colors. There are abstract figures and human handprints, as well as a bird's footprint and a spear-thrower. There are rock engravings in the shape of cupules. This paper reports the results of in situ monitoring of environmental parameters such as ambient air temperature and relative humidity, rock temperature in areas with and without rock paintings, as well as the speed of the winds that reach the archaeological site under investigation. The experimental data obtained indicate that the thermal action on the pictorial films of the rock paintings from the Caminho da Caiçara II site is clearly more intense than in other nearby archaeological sites. Direct sunlight on the rock paintings for most of the day and year is the main agent responsible for the high heating of the pictorial films. [ABSTRACT FROM AUTHOR]

The Pedra das Letras archaeological site is located in the Barro village, a rural area in the municipality of Piripiri, Piauí, Brazil. The aim of this paper is to present the first data from the survey of this archaeological site, which has recently been registered at the IPHAN, as well as the main problems affecting its degradation. Pedra das Letras consists of a sandstone block containing a small elevated rock shelter and a side niche with red rock paintings. 58 paintings were found on the rock wall at the back of the shelter, and seven handprints have been identified in the side niche. The most frequent figure in the pictorial panels is the handprint, with 45 representations of this motif having been identified, made using different execution techniques. The remaining figures were attributed to the abstract class, some of them without a clearly defined outline. The main conservation problems include the advanced state of degradation of the sandstone, insect nests (such as termites and wasps), salt efflorescence, wear and tear caused by rainwater, and plants attached to the rock block. [ABSTRACT FROM AUTHOR]

Lajedo do Riacho Braço Forte is an open-air archaeological site located along the rocky bed of the aforementioned stream, in the rural area of Piripiri, northern Piauí, Brazil. The aim of this paper is to present the first data from the survey of the recently found archaeological site and its conservation problems. The practical procedure in the field consisted of (i) obtaining the geographic coordinates of location; (ii) surveying the fixed sharpeners-polishers, mortars or pestles, and cupules, as well as the degradation problems; (iii) panoramic and detailed photographic recording of the archaeological remains and the degradation problems; (iv) prospecting around the site; and (v) monitoring in different expeditions. The new site consists of six points of concentration of ancient human activity marks, such as fixed sharpeners-polishers (identified in the forms of channel or frieze, canoe and polishing basin), mortars or pestles, and cupules, in addition to some lithic remains. In numerical terms, more than 11 mortars or pestles, 6 lithic vestiges, more than 42 fixed sharpeners-polishers, as well as some cupules, were found. The site is used as a recreational area and for washing clothes, and therefore faces intense degradation problems caused by users, especially garbage dumping, in addition to the natural erosive effect and the accumulation of successive generations of microorganisms. [ABSTRACT FROM AUTHOR]

This paper draws from some reflections on the relationship between power and knowledge coloniality and curricular field, since the analysis of curricular documents from Brazil and Argentine. This analysis intends to trace the coloniality elements of power and knowledge connected to the presence and the absence of Afro-Descendants and Africans in both secondary schools/highschools within an international background that fostered the visibilization of Afro-Descendant/African history and culture as well as educational policies prescribing the obligatory nature of level and extension of rights. The chosen period, 2006-2015, is characterized in the regional context by the expansion of educational rights and access at all levels and an increase in state financing, within the framework of the recognition of rights to excluded populations. In the international field, it was characterized by the gestation of the Declaration of the International Year of Afro-descendant by the United Nations Organization in 2011 and the proclamation, in 2013, of the International Decade for People of African Descent that runs from 2015 to 2024. In turn, further questions arise to propose reflections on the curricular field that may contribute to the development of an epistemology of the South. [ABSTRACT FROM AUTHOR]