Colorado Plateau, Paria Wilderness Area, Arizona.

Navajo sandstone detail and pattern.

Swimming about the capstone, which the Arizona diver thought looked like lapis lazuli, he discovered an entranceway and decided to explore further.

绕着顶石游，利桑拿潜水者认为其看起来像天青石，他发现一个入口而决定进一步探索。