The title Wastwater Screes applies to the scree-covered north-western fellside which plunges dramatically down into Wastwater. This also includes Illgill Head's neighbour Whin Rigg, the continuation of the ridge to the south-west.
The term "Wastwater Screes" describes a particular geographical area in the Lake District, characterized by its steep, scree-covered slope that descends dramatically into Wastwater. This area includes Illgill Head's neighbor, Whin Rigg, and extends southward along the ridge.