At one time some 3,000 vessels were employed to carry the huge pieces of granite that had been quarried from the cliffs of the Izu Peninsula, about 60 miles [100 km] to the south.
Pada suatu waktu, sekitar 3.000 kapal dikerahkan untuk mengangkut bongkahan batu granit yang besar yang telah ditambang dari tebing terjal di Semenanjung Izu, sekitar 100 kilometer ke arah selatan.