洞内は見ごたえのある地底湖が豊富で飽きない。日本屈指のリムストーンダム群である「千枚田」がみごと。ライトアップの演出は派手。
横溝正史原作の金田一耕助シリーズの「悪霊島」「八つ墓村」のロケ地。岡山県指定 天然記念物。
入場有料。駐車場あり。
入洞口
ちょっと高いところにある岩の割れ目から入る。
![f:id:cippillo:20211027224316j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224316.jpg)
![f:id:cippillo:20211027224325j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224325.jpg)
地底湖
全体的にライトアップの演出が派手め。「八つ墓村」感濃いめ?
![f:id:cippillo:20211027224307j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224307.jpg)
![f:id:cippillo:20211027224301j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224301.jpg)
![f:id:cippillo:20211027224247j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224247.jpg)
千枚田
リムストーンダムと呼ばれるタイプの地底湖。
![f:id:cippillo:20211027224228j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224228.jpg)
![f:id:cippillo:20211027224221j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224221.jpg)
![f:id:cippillo:20211027224215j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224215.jpg)
![f:id:cippillo:20211027224208j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224208.jpg)
入海
橋が架かっていて壮大な感じの地底湖。
将来の夢は家に入ると中が一面の池になっていて、部屋は池に浮いた島になっており、格部屋というか島には橋で渡る。
なので、ちょっとここは近い。
家庭内でいざこざがあれば、橋をはずす。ん? 世界観が「八つ墓村」に近づいている?
![f:id:cippillo:20211027224241j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224241.jpg)
![f:id:cippillo:20211027224202j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224202.jpg)
![f:id:cippillo:20211027224149j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224149.jpg)
![f:id:cippillo:20211027224142j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224142.jpg)
![f:id:cippillo:20211027224235j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224235.jpg)
![f:id:cippillo:20211027224130j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224130.jpg)
![f:id:cippillo:20211027224124j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224124.jpg)
![f:id:cippillo:20211027224111j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224111.jpg)
![f:id:cippillo:20211027224105j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224105.jpg)
![f:id:cippillo:20211027224059j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224059.jpg)
![f:id:cippillo:20211027224044j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224044.jpg)
![f:id:cippillo:20211027224031j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224031.jpg)
![f:id:cippillo:20211027224024j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224024.jpg)
![f:id:cippillo:20211027224017j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224017.jpg)
![f:id:cippillo:20211027224038j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027224038.jpg)
出口
入口と同じ。このブルー系のライトアップがいちばん好きかなあ。
洞内マップ
券売機と駐車場
![f:id:cippillo:20211027222858j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222858.jpg)
![f:id:cippillo:20211027222904j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222904.jpg)
![f:id:cippillo:20211027222910j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222910.jpg)
![f:id:cippillo:20211027222852j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222852.jpg)
案内坂
![f:id:cippillo:20211027222835j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222835.jpg)
![f:id:cippillo:20211027222822j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222822.jpg)
![f:id:cippillo:20211027222810j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222810.jpg)
![f:id:cippillo:20211027222717j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222717.jpg)
![f:id:cippillo:20211027222730j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222730.jpg)
![f:id:cippillo:20211027222758j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222758.jpg)
![f:id:cippillo:20211027222742j:plain](https://cdn-ak.f.st-hatena.com/images/fotolife/c/cippillo/20211027/20211027222742.jpg)
Google マップ
マークした場所は駐車場。