It is one of the most symbolic urban myths of Cascais. The historic necropolis in the center of the town, a subject of curiosity for many decades, is open to the public for regular visits on weekends and public holidays. The monument is located on the right bank of the Ribeira das Vinhas, at Praia da Ribeira, in the heart of the town of Cascais. “The caves of Poço Velho do not lead to Guincho, nor to Boca do Inferno as the older residents believe; now everyone can verify this in person,” says Severino Rodrigues, archaeologist and head of the Division of Archaeology and Historical Heritage of the Cascais Municipal Council. 𐤟 From Tuesday to Friday, free guided visits for groups of at least 5 people, by prior booking via email [email protected] or telephone 214 825 190. Between 10:00 and 13:00 and between 14:00 and 18:00, with last entries at 12:40 and 17:40. 𐤟 Weekends and public holidays, free visits open to the general public, no booking required. From 10:00 to 13:00 and from 14:00 to 18:00, with last entries at 12:40 and 17:40. Virtual tour, HERE .