Tokyo bay Aqua-line highway monument
A cutter face to drill the undersea tunnel for the Tokyo bay Aqua-line highway, and the tetra-pods at the man-made islands Umi-hotaru at where the drilling started.
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A cutter face to drill the undersea tunnel for the Tokyo bay Aqua-line highway, and the tetra-pods at the man-made islands Umi-hotaru at where the drilling started.