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Binnendüne Hollesand EarthCache

Hidden : 5/29/2008
Difficulty:
1 out of 5
Terrain:
2 out of 5

Size: Size:   other (other)

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Geocache Description:


Der Hollesand ist die größte Waldfläche, nach dem Heseler Wald, die größte zusammenhängende Waldfläche im Landkreis Leer. Trotzdem gehört der Landkreis Leer zu den waldärmsten Kreisen in Niedersachsen. Außergewöhnlich am Hollesand sind seine Binnendünen. Binnendünen sind vom Wind hervorgebrachte Bildungen aus Sand. Sie wurden überwiegend unter kaltklimatischen Bedingungen am Ende der Eiszeit also vor etwa mehr als 10 000 Jahren aufgeweht. Diese hier in Hollesand wurde im 19 Jahrhundert mit Fichten und Kiefern aufgeforstet, um Brenn- und Nutzholz daraus zu gewinnen. Dadurch entstand dieser Wald, der sich heute größtenteils als Bauernmischwald präsentiert.

 

 

Um diesen Earthcache loggen zu können beantwortet mir bitte drei Fragen, die Antworten findet ihr bei den Informationstafeln z.B. bei N53°20.306 E007°44.015.
Und macht dann ein ausagekräftiges Beweisfoto an angegebene Koordinaten (Pflicht) mit der Sanddüne im Hintergrund.

  1. Wie groß ist die Waldfläche um den Hollesand?
  2. In Welcher Himmelrichtung erstrecken sich die Dünen?
  3. Höhe der Dünen über NN von? bis ? in Meter
  4. Beweisfoto bei den Koordinaten, ich muss erkennen können das ihr wirklich dort wart.

Die Antworten sendet ihr dann per Email  an baumsucher(ät)gmail.com
Ihr erhaltet dann umgehend eine Log Erlaubnis.
Logeinträge ohne Logerlaubnis und Beweisfoto werde ich löschen!

 

005
GPS with a view to the sand dune

 

Hier noch mal zu den Fragen:

  1. Wie groß ist die Waldfläche um den Hollesand?
  2. In Welcher Himmelrichtung erstrecken sich die Dünen?
  3. Höhe der Dünen über NN von? bis ? in Meter
  4. Logbedingung: Ihr müsst vorher eine Mail mit den Antworten schicken
     

 

English

The Hollesand is the largest forest surface, after the Heseler forest, the largest connected forest surface in the district Leer. Nevertheless the district Leer belongs to the forest-poorest circles in Lower Saxony. At the Hollesand the dunes are uniquely .

Dunes are brought out of the wind  and made of education of sand. There where made under cold-climatic conditions at the end of the ice age before approximately more than 10,000 years ago. The  Hollesand was made as forest   in 19 the century with spruces and jaws, in order to win burning and utilizable wood from it. Thus developed this forest, which presents itself to a large extent today as farmer mixed woodland. 

After the gradual retreat of the Land ice coverage the bright-planed surface area was free from vegetation structures. Thus was almost without brakes power of the winds. Light, fine-grained ground particles were seized by the air flows, shipped often kilometres away and deposited at other place again. So developed in the course of the time in many places flight and surfaces and dunes, with strong winds also in the position were to be walking. At this time the temperatures lay in the annual average around 5 to 8 degrees below than today. Outside of the vegetation-free crushed stone and sand surfaces flat grasses and dwarf bushes grew. Large parts of the land surface were covered of Moos. In order to protect their pasturelands and settlements against the sand blowing, humans began the dunes with being sufficient seeds and low-being rooted wood during the Middle Ages to plant e.g. with jaws. So nowadays the forest jaws (Pinus sylvestris) are the characteristic woodland (guidance kind) for flight and areas and internal dunes. Wide Sand excavations for structural measures (e.g. settlement and road construction) as well as since that the 19. Jh. precipitous expansion of the cultivation of asparagus led in the last centuries to a noticeable decrease of this already rare type of biotope. Also the flight and surfaces lying outside of the nuclear ranges of the internal dunes are from protection of species-legal view absolutely protecting and receive worth. The high temperatures and evaporation rates during the summer months as well as the general nutrient poverty cause a rich kind inventory to warm and drying-loving planting and animal species (e.g. sand lawn vegetation, grasshoppers, game bees). 

Suburb with N53°20.306 E007°44.015 you find  a diagram with all information to  answer the questions and more about the dunes

 To Log this Earthcache please answer three questions, and make a photo with you and your GPS at the coordinates , the photo places  into the log entry. Send the answers  to me, after all you will receive immediately a log permission .

 To the questions

  1. How large is the forest surface  around the Hollesand?

  2. In which sky direction do the dunes extend?

  3. Height above sea level the dunes of? up? in meters

Additional Hints (Decrypt)

Ybtorqvathat ornpugra ! Nhs Tehaq qre znffrajrvfra Jrvgretnor iba RP-Yöfhatra vz Vagrearg fgryyra TFN haq Tebhaqfcrnx rf qra RP-Orfvgmrea frvg qrz 10. Whav 2019 jvrqre serv, rva Sbgb nyf Orjrvf qrf Orfhpurf mh sbeqrea.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)