How to read: かめぼら
Pronunciation: 
Names and idioms with total stroke of 20:
堀海 智宙 其場 本城地 若竹色
Names and idioms similar to 亀洞:
幸亀 亀淵 新亀 裸亀貝 脚赤亀虫
Celebrity names including 亀洞:
緑亀洞石寿
Yojijukugo(idioms with 4 Kanji characters) including 亀洞:
桃源洞裡 洞庭春色 洞房華燭