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Natural Monuments

Osterode am Harz

Hart's-tongue fern sinkhole in Hainholz

Natural Monuments

Osterode am Harz

Hart's-tongue fern sinkhole in Hainholz

Highlight • Natural Monument

Hart's-tongue fern sinkhole in Hainholz

Hiking

4.9

(251)

Cycling

5.0

(3)

Mountain biking

5.0

(2)

Gravel riding

5.0

(1)

This Highlight is in a protected area

Please check local regulations for:

Gipskarstlandschaft Hainholz

Location: Osterode, Osterode am Harz, Harz Mountains, Saxony-Anhalt, Germany

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Tips

August 6, 2022

Hiking

The Hirschzungen sinkhole has steep and partially overhanging walls. Its age is estimated at around 500 years. The collapse of the underlying karst cave took place in historical times.
The deer tongue is a fern that needs shady and moist steep slopes on limestone or gypsum soil. These requirements are very well met in the approximately 10 m deep sinkhole,

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May 9, 2021

Hiking

The deer tongue is a fern with a simple leaf and is considered rare. She loves soaked rock walls and subsoil with little soil. The northernmost deposit known to me is in front of Smoo Cave in northern Scotland. There is also a small stock growing in a column in the Roman Forum. There are several deposits in the gypsum karst area of the southern Harz.

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November 12, 2021

Hiking

With the surrounding vertical walls, this is a prime example of a sinkhole. Here is also the most impressive stag-tongue fern occurrence in the region that I know of. Sporadic occurrences occur again and again along the karst hiking trail, but they are not as noticeable as here in the sinkhole. Deer tongue fern is under nature protection.

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Nearby routes

Best routes near Hart's-tongue fern sinkhole in Hainholz

4.8

(112)

328

hikers

#1.

Karst Trail and View of Düna – Jetten Cave loop from Gipskarstlandschaft Hainholz

9.11km

02:32

170m

170m

Moderate hike. Good fitness required. Easily walkable paths.

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Moderate

4.8

(108)

299

hikers

#2.

Jetten Cave – Hainholz Gypsum Karst Landscape loop from Gipskarstlandschaft Hainholz

8.80km

02:26

160m

150m

Moderate hike. Good fitness required. Easily walkable paths.

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Moderate

4.7

(71)

187

hikers

#3.

Jetten Cave – Hainholz Gypsum Karst Landscape loop from Gipskarstlandschaft Hainholz

6.48km

01:49

140m

140m

Easy hike. Easily walkable paths.

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Easy

Details

Informations

Elevation 270 m

Weather

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Tuesday 3 November

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Expect light wind and shifting conditions.

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See nearby routes

Location: Osterode, Osterode am Harz, Harz Mountains, Saxony-Anhalt, Germany

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