Drystone walls in the Algarve, Portugal. Characterization and interconnection with the geology and lithology

Abstract Drystone walls can be frequently observed along the Algarve, south region of Portugal, performing both support and property division. This is also known by its geological diversity and, consequently, lithology, which are intimately related to orography. The combination all these factors allowed proliferation this traditional drystone during last centuries, they represent not only an important element landscape, but a perspective social, economic technical bases Algarve’s heritage. article intends present relationship between various facets. In order achieve objectives, several field surveys were carried out different zones, with intention gathering information natural material used construction technique, as well interaction local inhabitants. These visits supported bibliographic “Web-graphic” research, substantiate hypotheses. Based on data results it possible identify close interconnection geology wall structure typology, since made rock fragments (raw material) found nearby. However, function more orogeny latter defining type agricultural culture. study enriched enormous types, although Algarve relatively small region. main limitations development physical access interviews locals. constrictions due lack land maintenance, allowing vegetation growth naturally, invading covering walls, pandemic situation brought COVID-19 virus, interdict persons travels. Despite restrictions mentioned, fieldtrips gave enough correlation geology, lithology raw their relation terraces that proliferate in specific areas Algarve. view scarcity elements associated subject, studied territory, elaboration documents allow identification, characterization, geo-location dissemination object study, considered asset for theme. Finally, aims alert counter tendency abandon heritage, valuing making known.