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Natural Monuments

Wallonie

Isbelle Karst Spring

Natural Monuments

Wallonie

Isbelle Karst Spring

Highlight • Natural Monument

Isbelle Karst Spring

Recommended by 361 hikers out of 370

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Location: Hotton, Marche-En-Famenne, Wallonie, Wallonia, Belgium

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Best Hikes to Isbelle Karst Spring

4.7

(161)

625

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1. Ourthe Trail – Isbelle Karst Spring loop from Hotton

10.3km

02:53

190m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

4.5

(171)

812

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2. Pont de l'Isabelle – Isbelle Karst Spring loop from Hotton

8.16km

02:12

100m

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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Moderate

4.7

(49)

343

hikers

3. Pont de l'Isabelle – Ourthe Trail loop from Hampteau

8.55km

02:19

120m

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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Moderate

Tips

Willem VS

April 23, 2021

The Karst spring of the Isbelle

When the stream "l'Isbelle" comes from an impenetrable layer of sandstone on the limestone ridge, downstream from
from the hamlet of Melines, she disappears. She's looking for her way further underground! This disappearance is caused by the presence of two small parallel fault lines, which are perpendicular to the direction of the valley of the Ourthe.
At low tide or under normal conditions, the Isbelle flow disappears at the first fault line for about 50m in a series of small and scattered sinkholes in the riverbed. This
are too small to be physically examined by humans. The water permanently feeds a “resurgence” or “karst spring” called “Fontaine de Thot”. In this place, just at the foot of the chalet of the “Spéléo Club de Belgique”, the water resurfaces before it flows into the Ourthe at the end of the Isbelle valley.
In a swollen river or after a thunderstorm, we can observe a saturation process and the water partly continues to the surface in the bed of the Isbelle, only then to submerge in the series of sinkholes of the second fault line. The water from these sinkholes feeds the second, but not permanent “karst source” of the Isbelle, about 100m from the bridge called “Pont des Gattes”.
hotton-tourisme.be/media/images/upload/promenade%20de%20la%20pierre.pdf

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🇧🇪 Herwig Aertbeliën

December 15, 2021

Just enjoy this adventurous location. Children can be triggered by looking for water. It's nice to be here for a while.

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Details

Informations

Elevation 210 m

Weather

Wednesday 10 December

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Location: Hotton, Marche-En-Famenne, Wallonie, Wallonia, Belgium

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Isbelle Karst Spring

1. Ourthe Trail – Isbelle Karst Spring loop from Hotton

2. Pont de l'Isabelle – Isbelle Karst Spring loop from Hotton

3. Pont de l'Isabelle – Ourthe Trail loop from Hampteau

Other Popular Places to Check Out

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