Standing Stones of Callanish, Scotland

A primitive PDA? Without written records, we can never be sure what stone circles were used for. Many scholars, however, believe they were used for keeping track of the solstices and other astronomical observations. March’s picture shows two of the Standing Stones of Callanish, a circle located on the Island of Lewis, Outer Hebrides, Scotland. 

Two readers sent in correct answers and JAMES T. SOULE of Tucson, Arizona, won the drawing. We thank Michelle Mellen of Rancho Palos Verdes, California, for sending in the picture.