stack
geological landform consisting of a steep and often vertical column or columns of rock
Old Man of Hoy
sea stack in Orkney Islands, Scotland, UK
Darwin's Arch
island in Ecuador
Brown Jewel
sea stack on the North Sea coast of Aberdeenshire, Scotland, UK
Jumpoff Joe
former rock pillar on Oregon's coast
Stac an Armin
sea stack in the St Kilda archipelago, Scotland
Haystack Rock
sea stack in Oregon, United States
Hole-in-the-Wall, Eastern Cape
natural hole in sea stack, carved by marine and river erosion
Stac Lee
island in Outer Hebrides, Scotland, UK
Seal Rocks
islands in San Francisco County, California, United States
The Needles
3 distinctive stacks of chalk, ca. 30 m tall, off the western end of the Isle of Wight, UK
Hani
island in Iceland
Totem Pole
sea stack in Tasmania
The Pinnacles
two chalk formations, including a stack and a stump, located near Handfast Point, on the Isle of Purbeck in Dorset, southern England
Roque de la Bonanza
mountain in Spain
The Needle
sea stack on the west of Hoy, Orkney Islands, Scotland, UK