 Given the fact that no archaeological surveys were made until the present day, nothing is known about the structure of the monument, and after thousands of years it is still unbroken.Other nearby tumuli around Cividade and São Félix hills, including "Mamoa de Abade", just off Sejães, the "Mamoa de Monte Redondo", "Mamoa da Cova da Andorinha" and "Mamoa da Estrada", all broken.There are references to other tumuli and dolmens, including "Mão Pedrosa", "Leira da Anta" and another one in Balasar.