Horizontal Section No. 58 (1860). 1. From Pentre-Cefn, by Dryll, Twyford Cross and Boreaton Park. 2. From Cluddley, by Shiffnal to S of Cannock. 3. From Furrow Hill over Nash Scar to Eywood Park. Geological Survey of GB. 1stHorizontal Section No. 58 (1860). 1. From W to E, from Pentre Cefn, by Dryll, S of Oswestry, Twyford Cross and Boreaton Park, Shropshire. 2. From W to E, from Cluddley, near Wellington, across the Coalbrook Dale Coalfield,near Shiffnal and Brewood to the W Border of the S. Staffordshire Coalfield, S of Cannock. 3. From NW to SE across the Silurian Rocks and Old Red Sandstone, from Offas Dyke, Furrow Hill over Nash Scar to the River Arrow, S of Eywood