Lange Anna ("Tall Anna"), is a sea

stack Stack may refer to: Places * Stack Island, an island game reserve in Bass Strait, south-eastern Australia, in Tasmania’s Hunter Island Group * Blue Stack Mountains, in Co. Donegal, Ireland People * Stack (surname) (including a list of people ...

Buntsandstein The Buntsandstein (German for ''coloured'' or ''colourful sandstone'') or Bunter sandstone is a lithostratigraphy, lithostratigraphic and allostratigraphy, allostratigraphic unit (a sequence of rock strata) in the Subsurface (geology), subsurface ...

in the

North Sea The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Se ...

island of

Heligoland Heligoland (; , ; Heligolandic Frisian: , , Mooring Frisian: , ) is a small archipelago in the North Sea. The islands were historically possessions of Denmark, then became possessions of the United Kingdom from 1807 to 1890. Since 1890, the ...

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

. Its local name is ''Nathurn Stak'' ("Northern Stack").Maren Lindstaedt, Thomas Kersten:
Ein virtueller Klon für Helgolands Lange Anna durch terrestrisches Laserscanning.
'' In: Thomas Luhmann (Hrsg.): ''Photogrammetrie, Laserscanning, Optische 3D-Messtechnik – Beiträge der 4. Oldenburger 3D-Tage 2005.'' Wichmann-Verlag, Heidelberg, , S. 216-223. Climbing the stack is not allowed but tourists may view the rock from a distance. Lange Anna is somewhat similar to the

Old Man of Hoy The Old Man of Hoy is a Stack (geology), sea stack on Hoy, Orkney, Hoy, part of the Orkney archipelago off the north coast of Scotland. Formed from Old Red Sandstone, it is one of the tallest stacks in the United Kingdom. The Old Man is popular ...

or Old Harry. In 1969 it was declared a

natural monument A natural monument is a natural or cultural feature of outstanding or unique value because of its inherent rarity, representative of aesthetic qualities, or cultural significance. They can be natural geological and geographical features such as w ...

. The stack is subject to severe weathering wear and decomposition. It was decided that any further effort for its conservation could do nothing but slow down the process, so the Lange Anna today is consigned to its fate. Experts assume an acute danger of collapse of the top two thirds because of an unstable layer of sands above sea level, which already is the thinnest part of Lange Anna. Helgoland Lange Anna 2866

References

External links

Stiftung "Lange Anna - Helgoland"Steinerne Zeugen - Lange Anna Helgoland
{{Coord, 54.1882, 7.8698, format=dms, type:landmark_region:DE, display=title Stacks (geology) Heligoland