Covering an area of 9,300 hectares (23,000 acres), this beech forest, located in Le Petit Caux in the north-east of the department and the region, has close historical links to the Orléans family.

In the vicinity of Aumale, the Lower Eu Forest (2,800 hectares (6,900 acres)) occupies the southern end of the plateau, which is more tabular in appearance.

[4] One of the curiosities of the forest of Eu has long been the Quesne à Leu (or wolves' oak), 27 meters high and planted in the seventeenth century; still living despite having fallen.

Land clearing slowed in the 14th century with the start of the Hundred Years' War, the invasions of the troops of the King of England put an end to the prosperity of Normandy.

The Counts of Eu, landowners, found it more advantageous to sell the trees to charcoal burners, woodworkers and glassmakers than to cultivate low-paying lands.

At the beginning of the 20th century, the forest passed into the hands of a civil society founded by friends of the Duke of Orleans to avoid state control.