THIS SPERM SHAPE ISLAND IS VERY HISTORICAL ISLAND DURING WORLD WAR II . THIS ISLAND IS LOCATED IN THE MIDDLE ENTRANCE OF MANILA BAY .THE ISLAND IS LIKE A RECREATIONAL ISLAND FOR US SERVICE MAN . EQUIPT WITH BASEBALL FIELD , CINEMA , GOLF COURSE , AND SCHOOL FOR THEIR  CHILDREN .THE ISLAND WAS FORTIFIED TO DEPEND MANILA BAY AGAINST THE JAPANESE INVASION .THOSE CANNON HAVE A RANGE OF 7 MILES .ACCORDING TO THE TOUR GUIDE . THESE BATTERY GUN SHOOT IN RAINBOW WAY . INSIDE THE ISLAND THEY HAVE THE SPOTTER LOOKING FOR A GROUP  OF JAPANESE ON THE OTHER SIDE OF THE MAINLAND AND CALCULATE THE DISTANCE AND START SHOOTING . THE ONLY PROBLEM IS THEY KILLED MORE FILIPINOS AND AMERICAN PRISONER OF WAR ON THE MAINLAND .THE ISLAND HAVE A LIGHT HOUSE TO GUIDE THOSE SHIP ENTERING THE MANILA BAY . THIS TUNNEL IS ALSO USED BY GENERAL DOUGLAS MCARTHUR AS AN HEADQUARTER WHEN HE WAS THE CHIEF OF US FORCES IN THE PACIFIC . ACCORDING TO THE TOUR GUIDE . JAPANESE DONT ENTER THE FRONT DOOR THEY ALWAYS ENTER THE BACK DOOR . AND FOR ME THAT IS THE REASON WHY BATAAN FALL . ALL THEIR PREPARATION IS IN  THE FRONT . THEN THEJAPANESE ENTER IN THE NORTHEAST OF LINGAYEN , PANGASINAN INSTEAD IN MANILA BAY OR WEST SIDE OF LUZON .THE QUESTION IS HOW COME THEY DID NOT REALIZED THAT SITUATION THAT JAPANESE ARE COMING FROM TAIWAN ? ITS MEAN THEIR INTELLIGENCE IS FAILED TO ANALYZED THE WAR GAME .THIS BIG CANNON HAVE A RANGE OF 18 MILES .TO DEPEND THE ISLAND AGAINST THOSE SHIP ENTERING MANILA BAY .THESE BUILDING ARE THE SURVIVOR OF INTENSIFIED BOMBMING OF JAPANESE AND DO YOU KNOW WHY THOSE BUILDING ARE STILL STANDING BECAUSE THE STEEL AND CEMENT ARE MADE IN JAPAN .THIS IS IS THE ORIGINAL FLAG THEY USED HERE IN CORREGIDOR. AND THEY HAVE THIS MUSEUM AND THE STATUE TO COMMEMORATES ALL THE FILIPINOS AND AMERICAN WHO SACRIFICED THEIR LIFE DEFENDING THE ISLAND .