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Hammer Lake – Juist Wood loop from Juist

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Hiking trails & Routes

Hammer Lake – Juist Wood loop from Juist

Moderate

4.8

(103)

484

hikers

Hammer Lake – Juist Wood loop from Juist

02:30

9.85km

20m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: June 10, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Ruhezone I/14

Nationalpark Niedersächsisches Wattenmeer

Waypoints

Start point

Bus stop

Get Directions

3.82 km

Hammer Lake

Highlight • Lake

The freshwater lake in front of you is the result of several storm surges that have plagued the island in the past. Due to the Petri flood in 1651, the island was divided into two parts. The breakthrough wasn't fully closed until 1928. But the dike created afterwards did not withstand the flood in 1932 and the water that reached the island behind it created the Hammersee. Today the lake no longer has any salinity. There is a hiking trail all around - also through the Juister wood with its gnarled trees.

Translated by Google •

Tip by

4.48 km

Bench With a View of Hammersee

Highlight • Viewpoint

4.97 km

View of the North Sea from Ruhezone I/14 Dune

Highlight • Viewpoint

5.35 km

View over the Hammersee and the salt marshes

Highlight • Viewpoint

Der Hammersee ist der größte Süßwassersee der Ostfriesischen Inseln und ein einzigartiges Biotop. Der See kennzeichnet die Stelle, an der die Insel bei einer schweren Sturmflut, der Petriflut im Jahre 1651, zweigeteilt wurde. Zunächst verbanden noch einige südlich des Durchbruchs gelegene Dünen die beiden Inselteile. Doch jede weitere Sturmflut verkleinerte diese zarte Verbindung bis auch sie verloren ging. So mussten die Juister eine lange Zeit auf zwei Inseln leben. Erst 1932 konnten die getrennten Inselteile durch einen Dünendeich wieder verbunden werden. Die sogenannten Hammerdünen zählen heute zu den schönsten Dünen von Juist und es ist nur noch für den Fachmann zu erkennen, dass diese Dünen nicht von der Natur, sondern von Menschenhand geschaffen wurden. Der Hammer war nun eine große Bucht. Die Gefahr, dass eine Sturmflut die neu errichtete Dünenkette durchbrechen könnte, bestand immer.

So entschloss man sich, 1927 die Bucht auch zu der Nordseeseite abzuriegeln. Weil der Bedarf an Sand sehr groß war, wurde ein Feldbahngleis zur Dünenbaustelle gelegt. Vier Jahre später wurden die Bauarbeiten fertig gestellt und die beiden Inselteile endgültig verbunden. In der niedrigen Bucht zwischen den Hammerdünen und dem neuen Hammerdeich verblieb das Salzwasser einer Sturmflut und bildete einen See, dessen Salzgehalt mit der Zeit durch Regenwasser abgebaut wurde. So entstand der größte Süßwassersee der ostfriesischen Inseln. Heute wird der Hammersee langsam immer kleiner, da er vor allem nach Westen hin mehr und mehr verlandet. Er ist ein Biotop ersten Ranges, denn zahlreiche Tier-und Pflanzenarten lassen sich hier nieder. Dies können Sie von den Aussichtsplattformen im Norden und Süden hervorragend beobachten. Rund um den Hammersee gibt es einen kleinen Wanderweg. Der Name ist vom friesischen Wort “Hammer” mit der Bedeutung “niedrig gelegene, feuchte Wiese” abgeleitet.

Der Hammersee befindet sich in der Schutzzone 1 (Ruhezone) des Nationalsparks. Bitte beachten Sie die Hinweisschilder! Ein markierter Wanderweg führt Sie um diesen auf den Ostfriesischen Inseln einzigartigen See. Hunde sind - wie überall auf der Insel - unbedingt an der Leine zu führen.

(juist.de/vor-ort/toewerland/juist-guide/)

Tip by

6.08 km

Bench in the woods by Hammersee

Highlight • Rest Area

Rest bench in the grove at Lake Hammersee

Translated by Google •

Tip by

6.25 km

Juist Wood

Highlight • Forest

"The elongated, narrow island is exposed to the constant wind, which does not allow extensive trees, such as on Norderney or Borkum. In the twenties of the century before last, the biologist Dr. Otto Leege began west of the Hammersee with the Planting particularly wind-hard plants and thus created the nature reserve that you can hike through on the approved paths.
As rare trees you can discover black alder and Carpathian birch in the grove. This small forest is something special, because the gnarled growth of the trees makes it look enchanted and ghostly. Especially when it is foggy you feel transported into the realm of legends and myths. The strong wind is the reason for this unique tree growth. You can find green and gray scales on many trees. These are lichens that have settled on the tree bark. It is precisely these lichens that are used as indicator plants for absolutely clean air. You will therefore find evidence of clean, low-pollutant air on Juist in our forest.
You can often spot deer on a hike through the grove. They have been living on our island for about 50 years. Hike or drive to the viewing platform in the woods. From there you not only have a beautiful view over the small, enchanted forest area, but also a view of the North Sea. A hike through the woods is a great alternative to a day at the beach, especially on warm days. "
juist.de/vor-ort/toewerland/juist-guide
This forest has cast a spell over us, it really creates an enchanted impression with its dense forest and cave-like alleyways.
If we are used to wandering between tall beeches and oaks, we will find bonsai oaks here (exaggerated), only the wind evacuators, which are somewhat taller, which have been combed diagonally by the storm and constant wind.

Translated by Google •

Tip by

6.37 km

Woodland path along the Hammersee

Highlight • Trail

In the summer partly quite overgrown

Translated by Google •

Tip by

7.95 km

Pilzanker

Highlight • Monument

Now you know you've arrived in the Loog.

Translated by Google •

Tip by

9.85 km

End point

Bus stop

Way Types & Surfaces

Way Types

4.90 km

4.29 km

454 m

201 m

Surfaces

6.02 km

3.72 km

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Saturday 4 July

18°C

16°C

39 %

Additional weather tips

Max wind speed: 24.0 km/h

to get more detailed weather forecasts along your route

Comments

May 4, 2026,Abschiedsrunde Töwerland 🥾Hammersee – Juister Wäldchen Runde von Juist

One last round and a farewell. Before breakfast, through the dunes and towards the Hammersee to circle it. Past the island school, which looks after all children up to 10th grade, it continues over field paths, where the pupils come towards me on foot or by bike. At the edge in the dunes, you can see deer, pheasants and hares, …

Showing Translation

May 6, 2025,Juister Wäldchen – Hammersee 🔁 von Juist

Today, Komoot was acting up. There aren't any 330 meters of elevation gain on Juist. 😂 I guess it's 30 meters instead. Besides, it took about 3 hours to record and covered about 12.7 km. Since I also wear a smartwatch, I can determine it with a fair degree of certainty.

Showing Translation

October 20, 2021,Um den Hammersee

Today's tour took us to Hammersee, an inland lake that was created by storm surge in 1932 and is increasingly silting up. A beautiful circular path leads around this bird paradise, but you can only see it from one point on the south bank. On the way back from Loog we got pretty rainy.

Showing Translation

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Hammer Lake – Juist Wood loop from Juist

Hammer Lake

Bench With a View of Hammersee

View of the North Sea from Ruhezone I/14 Dune

View over the Hammersee and the salt marshes

Bench in the woods by Hammersee

Juist Wood

Woodland path along the Hammersee

Pilzanker

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