burial mound of the megalithic monument of el dolmen de soto, in the village of trigueros, huelva province, andalusia, spain

andalusia archeoastronomy architecture burial chalcolithic circular construction constructions corridor cultural culture dolmen east engraved engravings gallery glitter history huelva magical manifestation masterpiece megalithic mistery monument mound mysterious obermaierm oriented orthostat reliefs ritual sepulcher sepulchral skywatching solstice soto spain stone summer sun sunray tomb tourism trigueros unique vertical