Ball's Pyramid
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Ball's Pyramid is an uninhabited islet in the Pacific Ocean located 20 kilometres southeast of Lord Howe Island, between Australia and New Zealand. The steep rocky basalt outcrop is the eroded plug of
Ball's Pyramid seen from the surrounding waters
Illustration of Ball's Pyramid (on the farthest left) that accompanied Arthur Phillip's description
A closer view of the island
Stack (geology)
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A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind an
Ball's Pyramid
…million years ago. It is 572 metres (1,877 ft) high, 1,100 metres (3,609 ft) long and only 300 metres (984 ft) across, making it the tallest volcanic stack in the world. Ball's Pyramid, which is part of Australia's Lord Howe Island Marine Park, is positioned in the centre of a submarine shelf surrounded…
The Twelve Apostles stacks in Victoria, Australia
Downpatrick Head Dún Briste, County Mayo, Ireland. Clear horizontal bedding is visible, exposing 350 million years of geological history.
Stack Rock, County Antrim by Clarkson Stanfield, 1861
Fernando noronha