AN ULTRA ORTHODOX JEWS SING DURING LAG BA-OMER FESTIVITIES ON MERON MONTAIN AT THE GRAVE OF A SECOND-CENTURY MYSTIC IN NORTHERN ISRAEL. Ultra Orthodox Jews sing during Lag Ba-Omer festivities on Meron mountain at the grave of a second-century mystic in Northern Israel May 9, 2004. Israelis celebrate according to the Jewish tradition Lag Ba-Omer which marks the end of a plague in the Middle Ages that killed thousands of disciples of a revered rabbi in the holy land. REUTERS/Reinhard Krause