沖ノ島といえば福岡県の宗像市沖合の沖ノ島が有名だが、千葉県館山市にも沖ノ島はある。周囲はほぼ東西300m、南北200m周囲１キロメートルの小さな島で、以前は沖合に浮かぶ小島だったが関東大震災による隆起で陸続きとなった。島内には沖ノ島宇賀大明神社があり1096年、平安後期の建立らしい。歩いてすぐに一周できる島ではあるが、海の中で常に風に吹きさらされているためか、森、そして木々は都会にはない不思議な形をしている。

Okinoshima Island off the coast of Munakata City in Fukuoka Prefecture is well known, but there is also an Okinoshima Island in Tateyama City, Chiba Prefecture. It is a small island measuring approximately 300 m east to west, 200 m north to south, and 1 km in circumference. It used to be a small island floating offshore, but was connected to the land by uplift due to the Great Kanto Earthquake. On the island is Okinoshima Uga-Daimyojin Shrine, which was built in 1096, apparently in the late Heian period. Although it is possible to walk around the island in a short time, the forests and trees are strangely shaped, perhaps because the island is constantly exposed to the wind in the sea.