TUNNEL HILL ROAD, RABAUL, NEW BRITAIN. 1945-10-03. THE INTERIOR OF A LARGE TUNNEL WITH SMALLER ...

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TUNNEL HILL ROAD, RABAUL, NEW BRITAIN. 1945-10-03. THE INTERIOR OF A LARGE TUNNEL WITH SMALLER BRANCHES LEADING OFF. THE JAPANESE MADE EXTENSIVE USE OF TUNNEL SYSTEMS IN THE RABAUL AREA AFTER ABOVEGROUND INSTALLATIONS HAD BEEN DESTROYED BY ALLIED BOMBING.