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Photo: Mortier.Daniel (CC BY-SA 3.0)
The Gros Chene of Liernu
Photo: Mortier.Daniel (CC BY-SA 3.0)See it at full size

The Gros Chene of Liernu

Years old800-1200
Girth14 m
SpeciesPedunculate Oak

Seasons1 of 4

At just over 14 metres round, the Gros Chene of Liernu is reputed to be the widest tree trunk in Belgium, and oral tradition in the village puts its age near a thousand years, back to Charlemagne. Nobody has cored it to check, and the tree does not make that easy. The trunk is hollow and fissured, and in 1838 someone furnished the inside as a small chapel to Saint-Antoine Ermite, so the girth reported is a fused, hollow mass rather than a single clean stem. It stands beside the church, the former rectory and a school in the small village of Liernu, and the local children who now walk past it daily continue a habit their grandparents had. The Confrerie du Gros-Chene has tended and celebrated the tree for decades, with its own annual festival. Belgium made it a protected monument by royal decree in 1939 and raised it to exceptional heritage status in 1992; it also represented the country at the European Tree of the Year final in 2016. The oldest-tree-in-Belgium claim is a village story more than a measurement, and this project repeats it as exactly that. Come in January, when the leaves are down and the whole fissured, chapel-holding shape of the trunk is easiest to read.

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Getting there

Rue du Gros-Chene, Liernu, Eghezee, Namur

You can recognise it by its hollow, fissured trunk holding a tiny chapel to Saint-Antoine Ermite, furnished inside since 1838. It stands beside the church, former rectory and school in Liernu.

Rural village; no station, reached by road from Eghezee

The tree's year
now JanFebMarAprMayJunJulAugSepOctNovDec

Winter shapeIn fruit

January, when the leaves are down and the hollow, chapel-holding shape of the trunk is easiest to read

The line is our estimate of how much there is to see, not a measurement. Typical for this species where this tree stands; exact weeks shift with the year.

Sources

Where the facts on this page come from. The story was written with AI from these sources, and readers who know the tree correct it.

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The Gros Chene of Liernu

For example: “Best seen from the north side around four, when the sun comes through.” Or: “There was a church on this square until 1755.”

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