The island, named Utøya, pokes out of a glacial lake called Tyrifjorden twenty-five miles west of Oslo.
In a little more than an hour, he shot ninety-nine people, almost all of them more than once, half at least three times. He killed sixty-seven, the youngest 14 and the oldest 51 but most of them teenagers. He also killed a 17-year-old boy who, in his terror, fell off the cliff on the west side and fractured his skull and his pelvis and tore his lung and his spleen. The sixty-ninth kill was another 17-year-old boy, who tried to swim from South Point. Divers found him at the bottom of the lake.
He had planned to kill everyone on the island, to drive them, panicked, into Tyrifjorden to drown—to use the water as a weapon of mass destruction, he would later explain.Also, he wanted to film himself beheading Gro Harlem Brundtland. Still, with the eight dead in Oslo, Anders Behring Breivik killed seventy-seven people on 22 July, the bloodiest day in Norway since World War II and the worst mass murder by a lone gunman in modern Western history.