Stacks Stacks Ball's Pyramid is a volcanic stack 16 km (10 miles) southeast of Lord Howe Island. Ball's Pyramid is located at . Ball's Pyramid is part of the Lord Howe Island Marine Park, it was a popular spot for climbers wanting a challenging expedition, but climbing on it is now banned by the New South Wales state government for biodiversity and safety reasons. ...more on Wikipedia about "Ball's Pyramid"
Étretat is a commune in the Seine-Maritime département of France. Population: 1,640. ...more on Wikipedia about "Étretat"
London Arch is a natural arch in the Port Campbell National Park, Australia. ...more on Wikipedia about "London Arch"
The Old Man of Hoy is a 137 metre (450 ft) stack of red sandstone perched on a plinth of igneous basalt, close to Rackwick Bay on the west coast of the island of Hoy, in the Orkney Islands, Scotland. ...more on Wikipedia about "Old Man of Hoy"
Percé Rock ( French rocher Percé, "pierced rock") is one of the largest and most spectacular natural arches in the world. ...more on Wikipedia about "Percé Rock"
A stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast. Stacks are formed when part of a headland is eroded, leaving a small island. They also form when a natural arch collapses due to sub-aerial processes and gravity. A stack may collapse or be eroded leaving a stump. Stacks form most commonly on chalk cliffs, because of the medium resistance to erosion. Cliffs with weaker rock, such as clay tend to slump and erode too quickly to form stacks, while harder rocks, such as granite erode in different ways. ...more on Wikipedia about "Stack (geology)"
The Needles is a row of distinctive stacks of chalk that rise out of the sea off the western extremity of the Isle of Wight, England, close to Alum Bay. A lighthouse has stood at the western end of the formation since 1859. The formation takes its name from a needle-shaped pillar called Lot's Wife that used to stand in its midst until it collapsed in a storm in 1764. The remaining rocks are all short and squat and not at all needle-like, but the name has stuck. The Needles can be considered as an extension of The Undercliff, the cliffs which make up much of the southern coast of the Isle of Wight. ...more on Wikipedia about "The Needles" It's real shortopedia feeling!
The Twelve Apostles are a collection of natural limestone stacks standing just off shore in the Port Campbell National Park, on the Great Ocean Road in Victoria, Australia. ...more on Wikipedia about "The Twelve Apostles, Victoria"
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