CHANGES OF WATERGATE NO.1 SINCE 1986 Photos by C.TAKEMOTO & H.IHZUKA
		1986.5.4

1989.7.23		1990.8.24

1992.8.9		1992.11.2

1993.6.28		1998.3.13

2000.10.8		2002.5.18

2006.02.03
The removal of sand layers had been accelerated during these 4 years

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