A HIKER SUFFERED SERIOUS INJURIES THIS AFTERNOON, AFTER A 2-300 POUND BOULDER TRAPPED HIM. LARS JOHAUSEN’S WAS HIKING WITH 2 FRIENDS WHEN HIS LEG WAS PINNED IN THE 12:45 P.M. INCIDENT AT PINNACLES NATIONAL MONUMENT . JOHAUSEN’S FRIENDS SAY HE HAS BEEN HIKING IN PINNACLES FOR ABOUT 3 DECADES.