In parts of south Shropshire bordering Staffordshire there are valleys in the sandstone with no sign of surface streams.
Normal dry valleys are found on highly permeable rocks such as limestones. Sandstone is partly permeable, but I doubt that it is permeable enough to explain the dry valleys in this area. The U-shape of these valleys marks them as a product of ice age erosion. Are they ghosts of the glaciers and their floods of meltwater?
The valley pictured comes down to the Claverley Brook / Hilton Brook between Lower Hopstone and Hilton.