"HOLLOWAY and [DETHWICK] LEA are two villages, two and a half miles from Cromford, containing considerable lead works, a manufactory for hosiery and merino spinning, and one for hats. The situation of these village is highly picturesque. From Lea the inclined plane of the High Peak railway ascends to the summit of the lofty bills which environ Cromford. Lea, or Dethwick Lea, and Holloway (in the parish of Ashover), form one hamlet, containing 675 inhabitants."
[Description from Pigot and Co's Commercial Directory for Derbyshire, 1835]
You can see pictures of Dethick and Holloway which are provided by:
You can see maps centred on OS grid reference SK330570 (Lat/Lon: 53.109174, -1.508494), Dethick and Holloway which are provided by: