Tumulus of Koninksem, Gallo-Roman tumulus on the Romeinse Kassei in Koninksem, Tongeren, Belgium

The Tumulus of Koninksem, also called La Grande Tombe, is a grass-covered earthen mound about 8 metres high and 35 metres across, standing on the Romeinse Kassei, some 40 metres north-west of the Roman road opposite house number 206. Two trees grow at its south-eastern foot, and a hedge runs along its base.

The tumulus was raised between the 1st and 3rd centuries, in the Gallo-Roman period, beside the Roman road now called Romeinse Kassei. In 1747 it was investigated on the orders of Louis XV of France, and around 1850 the mound was partly dug away. It has been a protected monument since 1979.

Locals call it La Grande Tombe, to tell it apart from La Petite Tombe, the other tumulus of Koninksem at Paardsweidestraat. The mound stands about 40 metres north-west of the Romeinse Kassei, opposite the building at number 206, and is not planted with trees; two trees grow at its south-eastern foot.

The mound stands about forty metres north-west of the Romeinse Kassei (N69), opposite house number 206, with cultivated fields around it and houses close by. It is not wooded; two trees grow at its south-east foot. The site is a protected monument, so walk around the base rather than up the slope.

The mound is also called La Grande Tombe, to tell it apart from the smaller tumulus of Koninksem in the Paardsweidestraat, known as La Petite Tombe. It stands about forty metres north-west of the Romeinse Kassei, opposite the building at number 206.