Artificial caves of Alapraia

Cascais e Estoril, Portugal

The Artificial caves of Alapraia (Grutas Artificiais de Alapraia) constitute a prehistoric necropolis formed by four subterranean tombs or hypogea that were created by excavating marlstone rock using stone tools. They are situated in the centre of the suburb of Alapraia in Estoril, Lisbon District, Portugal and are believed to date back to the last quarter of the 4th Millennium BCE and to have been used as a necropolis for over one thousand years.

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Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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