corridor of megalithic monument of el dolmen de soto

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