"The Eyes of God" - Prohodna Cave, is a karst cave in north central Bulgaria, located in the Iskar Gorge near the village of Karlukovo in Lovech Province. The cave is known for the two eye-like holes in its ceiling, known as the Eyes of God or Oknata.
Caño Cristale is a river in Meta, Colombia in the province of Serrania de la Macarena. But this is no ordinary river. The colors that can be seen here have caused the river to be deemed by many as the most beautiful in the world.
From My Nature's Bounteous Beauty Board - The Cameron Falls located inside the Waterton Lakes National Park in Alberta, Canada, turn red when heavy rains occur. Argolite, the red-colored sediment, causes the water to turn red.