Construction Workers Were Building a Solar Plant—and Uncovered a 5,000-Year-Old Fortress
A solar plant project that began in 2021 in Almendralejo, Spain, took an unexpected turn when workers discovered settlements ...
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The Echinoid Directory
internal buttressing in the form of concentric walls around the periphery with or without more central pillars; a pair of sunken and enclosed sphaeridia in each ambulacrum; petals when well developed ...