The Battle of Garris, France: 15 February 1815

In mid-February, Wellington commenced offensive operations and one of the first combats was at Garris on 15 February. Here, General Harispe decided to defend a high ridge called the Motte de Garris.

I have been trying to determine the location of this ridge. Was it west of Garris or to the east between Garris and Saint Palais? Oman does not say and I can not find it on Google maps.

Thanks!

Bob