Lange Anna ("Tall Anna"), is a high sea stack of Buntsandstein in the

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

island of

Heligoland Heligoland (; german: Helgoland, ; Heligolandic Frisian: , , Mooring Frisian: , da, Helgoland) is a small archipelago in the North Sea. A part of the German state of Schleswig-Holstein since 1890, the islands were historically possession ...

, Germany. 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 or Old Harry. In 1969 it was declared a

natural monument A natural monument is a natural or natural/cultural feature of outstanding or unique value because of its inherent rarity, representative of aesthetic qualities or cultural significance. Under World Commission on Protected Areas guidelines, nat ...

. 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, 11, 17, N, 7, 52, 10, E, display=title Stacks (geology) Heligoland