SRL for [criss crossed]: The islands of Peleliu and Anguar , which were battlefields in the Pacific war between the US and Japan , are [criss crossed] by tunnels built by the Japanese , while the remains of ships and aircraft dot the ocean floor .
ARG-1: The islands of Peleliu and Anguar , which were battlefields in the Pacific war between the US and Japan | ARG-0: by tunnels built by the Japanese