Drought Reveals Ancient Long-Hidden “Spanish Stonehenge” VISUAL Posted: September 12, 2019 8:29 am This past summer, an extreme drought in the Extremadura area of Spain that caused the Valdecañas Reservoir’s water levels to plummet has revealed a series of megalithic stones. – artnet Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)