This is Arthur's Chair and the ridge upon which it stands is Stone Arthur. Prominence is negligible, and other than the low outcrop itself, the "summit" is merely the point at which the gradient steepens markedly.
This is Arthur's Chair, and the slope upon which it stands is Stone Arthur. Significance is minimal, and other than the low outcropping itself, the "peak" is merely the point at which the incline becomes more pronounced.