4.2
(9)
28
hikers
04:43
17.1km
290m
Hiking
Hike the 10.6-mile Grotte de l'homme de Spy loop, a moderate trail through forests, past the historic Spy Cave, with 958 feet of gain.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
9.35 km
Highlight • Cave
Translated by Google •
Tip by
11.4 km
Highlight • Viewpoint
Translated by Google •
Tip by
17.1 km
End point
Parking
Way Types & Surfaces
Way Types
5.05 km
4.45 km
4.33 km
3.02 km
249 m
Surfaces
4.97 km
4.00 km
3.30 km
2.54 km
1.64 km
647 m
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Elevation
Highest point (190 m)
Lowest point (90 m)
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Weather
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Wednesday 1 July
22°C
14°C
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This route was planned by komoot.
This loop is generally considered a moderate hike. You'll encounter steep inclines and potentially challenging rocky and muddy sections, especially on the descent to the Spy Cave. Good physical condition and appropriate footwear are recommended.
The trail winds through the beautiful Bois de la Betche al Rotche forest, featuring a mix of dirt paths and trails. You can expect calcareous rock formations on hillsides and humid areas in the valley bottoms. Be prepared for rocky and steep sections, and note that the path along the Orneau valley can be wet and muddy even during dry periods.
The primary highlight is the Spy Cave, a site of immense archaeological significance where Neanderthal remains were discovered. You'll also enjoy a View of Ferme de Goyet and the serene natural reserve of the Bois de la Betche al Rotche.
The full loop, which is approximately 17.1 km (10.6 miles), typically takes around 4 hours and 43 minutes to complete, depending on your pace and how long you spend at points of interest.
While specific parking details aren't provided, the trail starts and ends in Spy. Look for public parking options within the village of Spy to begin your hike. There is no mention of permits or fees for parking.
Yes, the trail is generally dog-friendly. However, given the potentially steep, rocky, and muddy sections, especially near the cave, ensure your dog is capable of handling such terrain. Always keep your dog on a leash and clean up after them.
The trail can be enjoyed year-round, but spring and autumn offer pleasant temperatures and beautiful scenery. Be aware that sections along the Orneau valley can be very muddy, especially after rain or during wetter seasons, so appropriate waterproof footwear is crucial.
No, there are no permits or entrance fees required to hike the Grotte de l'homme de Spy loop trail itself. However, if you plan to visit the nearby Espace de l'Homme de Spy interpretation center, there may be an admission fee.
The full loop is generally not suitable for strollers or individuals with reduced mobility due to steep, rocky, and potentially muddy sections, particularly the descent to the cave. A shorter, family-friendly loop of about 3.5 km exists, but even this includes a rather steep, rocky path leading down to the cave.
Yes, the route also passes through sections of the GR 126 Bruxelles - Membre-sur-Semois, Chemin de Spy à Jemeppe, Baty Saint-Augustin, Rue du Faux, Chemin n°10, Rue du Casino, and Rue du Petit Tienne.
Given the varied terrain and potential for mud, especially along the Orneau valley, sturdy hiking boots with good grip are essential. Layers of clothing are advisable, and consider bringing trekking poles for stability on steep or rocky sections. Don't forget water and snacks.
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