Havernas Castle – Naours Underground City loop from Saint-Ouen
Havernas Castle – Naours Underground City loop from Saint-Ouen
5.0
(1)
12
riders
Havernas Castle – Naours Underground City loop from Saint-Ouen
02:05
49.5km
260m
Road cycling
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.
Last updated: March 19, 2026
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After 5.62 km for 763 m
Waypoints
Start point
Parking
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5.64 km
Gravel Carette segment - Halloy
Highlight (Segment) • Other
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10.4 km
Havernas Castle
Highlight • Other
13.9 km
Murals of the Church and School in Naours
Highlight • Monument
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14.7 km
Naours Underground City
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Fallen into oblivion in the 19th century, the underground city will be rediscovered in 1887, studied from an archaeological point of view and then opened to visitors.
An important occupation during the Thirty Years' War has been attested by archeology1.
This underground city could shelter nearly 2,000 people. Throughout the galleries are the rooms of the different families. Also noticeable are the stables with the troughs, the ventilation chimneys and the smoke chimneys which stood out in those of the houses.
Almost everywhere on the walls there are inscriptions, religious symbols, etc. with dates ranging from the year 1340 to 1792.
It was finally used by British soldiers during the Second World War.
The visit is worth the detour!
Sources:
citesouterrainedenaours.fr
fr.wikipedia.org/wiki/Cit%C3%A9_souterraine_de_Naours
Translated by Google •
Tip by
49.5 km
End point
Parking
Way Types & Surfaces
Way Types
45.8 km
2.96 km
672 m
< 100 m
< 100 m
Surfaces
45.9 km
2.85 km
672 m
141 m
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Elevation
Highest point (140 m)
Lowest point (20 m)
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Weather
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Saturday 23 May
30°C
14°C
0 %
Additional weather tips
Max wind speed: 7.0 km/h
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