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Mammoth Cave National Park: Longest-known Cave System in the World
Mammoth Cave National Park is the longest-known cave system in the world. Deep within the cave's vast subterranean world, there are five overlapping and...
Kings Cave Arran, Scotland
A series of seafront caves on the Isle of Arran, north of Blackwaterfoot, is known as Kings Cave. During an ice age, when the...
The Kurdish Qandil Mountains
The Kurdistan region adjacent to the Iran-Iraq border has a range of the Qandil Mountains. This part of the mountainous area belongs to the...
Band of Holes – An Ancient Puzzle That Continues to Baffle Experts
The Band of Holes is a geological wonder that is also known as Monte Sierpe or Cerro Viruela (smallpox hill). When you look down...
How do Shrikes Get Their Name
How do Shrikes Get Their Name? - William Turner, in a Short and “Succint History of Birds” in 1544, called the red-backed shrike “a...
The Melodic American Robin Sound
The American Robin sound is a familiar and beloved sight in many parts of North America. Observing this bird in nature is not only...