A petroglyph on the south face of Piedra del Sol, a free-standing rock in New Mexico’s Chaco Canyon, may depict the solar corona observed during the total solar eclipse of July 11, 1097 CE, says Professor J. McKim ‘Kim’ Malville of the University of Colorado, Boulder. The solar eclipse petroglyph in Chaco Canyon, New Mexico. Image credit: J. McKim Malville, University of Colorado. The petroglyph — carved in a rock by early Pueblo people...
