first winter solstice sunray at huerta montero site, spain

ages almendralejo archeoastronomy archeological badajoz bronze building burial calcholitic circular collective conserved corridor day dolmen dome domed extremadura false first funeral funerary grave harnina huerta livestock millennium montero mud oriented prehistoric ritual rituals roof shortest singular site skywatching society solstice spain stones sun sunray third tholos tomb wall well wetland winter