Located in the Shale Creek Preserve, a small flame burning steadily in a rocky alcove behind the cascading 35-foot waterfall continues to puzzle geologists.
Thousands of massive ancient stone jars scattered across the arid landscape of the Xiangkhoang Plateau of Laos remain archaeology's most intriguing unsolved puzzles.
In 2000, two miners unexpectedly discovered the Cave of Crystals. What remains a mystery is the extraordinary size of the colossal white crystals emerging from every surface of the horseshoe-shaped chamber.
While preparing new land for banana plantations in Costa Rica, workers stumbled upon a collection of nearly perfect, round stones. Although there are a lot of speculations, the exact purpose remains unknown.
Scattered across the grasslands of southern Africa’s Namib Desert, thousands of mysterious “fairy circles” have puzzled scientists for years. The strikingly uniform pattern of these circles, which appear evenly spaced across the desert, remains unexplained.