ダム穴 (via すたど、2ch)
- http://photos1.flickr.com/3002669_9314cb8eb9_o.jpg (flickr)
- http://photos6.flickr.com/7317841_4e80e35f80_o.jpg
- http://photos5.flickr.com/7318078_7431e2b510_o.jpg
- http://photos8.flickr.com/7317755_73020e7a0e_o.jpg
- http://photos6.flickr.com/7317705_5f8e0cd36d_o.jpg
- http://photos4.flickr.com/7284912_8b984692c8_o.jpg (flickr)
- http://photos4.flickr.com/4053163_8c40bb7882_o.jpg (flickr)
- http://www.lbtaskforce.org/Photos/glory_hole%20Jake%20Mann.jpg
- http://www.norcalmovies.com/NapaCounty/LakeBerryessa/berryessa04.jpg
- http://www.robertdawson.com/GCVP/spillway,-lake-berryessa.gif
- http://www.scwa2.com/images/Monticello%20Dam.jpg
- http://www.trophybassonly.com/id56.htm
- http://images.google.com/images?q=tbn:k070YNBb62gJ:http://blog.orbyonline.com/images/mrpryor/IMG_0505.jpg
ダムの排水装置らしい
カリフォルニア州サンフランシスコ「Berryessa湖 Monticelloダム」
http://maps.google.com/maps?q=San+Francisco&ll=38.513517,-122.103939&spn=0.051670,0.053129&t=k&hl=en