The aqueduct from Gileppe to Verviers is about 80 km in length .
At a short distance from Dolhain is the famous dam of the Gileppe , the vast reservoir constructed to supply Verviers with water free from lime for its cloth manufactures .
The aqueduct from reservoir to Verviers is about 80 km in length .
At a short distance from Dolhain is the famous dam of the Gileppe , the vast reservoir constructed to supply Verviers with water free from lime for its cloth manufactures .