MARCH/APRIL 2020 * VOLUME 73, NUMBER 2 CONTENTS 48 The wreck of USS Lamson, a U.S. Navy vessel sunk during the July 1, 1946, nuclear test in Bikini Atoll FEATURES 24 INSIDE A MEDIEVAL GAELIC CASTLE A tiny Irish island holds the secrets of an unknown royal way of life BY JARRETT A. LOBELL 32 LORD OF THE OASIS In Egypt's Western Desert, worship of the mysterious god Seth thrived long after it waned elsewhere BY BENJAMIN LEONARD 42 REMEMBERING THE SHARK HUNTERS Unique burials show how ancient Peruvians celebrated dangerous deep-sea expeditions BY ERIC A. POWELL 48 ATOMIC AGE GHOST FLEET The submerged remains of two massive bomb tests in the Pacific illustrate the potential horrors of nuclear war BY SAMIR S. PATEL 38 THE FOUNDER'S TOMB Frescoes discovered in a Jordanian village narrate the early days of a once-cosmopolitan city on the eastern edge of the Roman Empire BY DANIEL WEISS archaeology.org Cover: A view of the Rock, Lough Key, Ireland PHOTO: PHOTO by MalTe HeiTMüller/ @MalTeHeiTMueller 1http://www.archaeology.org