Clough

The day-sky glimmered on the dew[…] And lurked in heath and braken clough

Source: wiktionary

These beds form no good escarpments southward of the clough; but they appear to be higher than the corresponding beds on the opposite side; there would thus seem to be a fault in the valley downthrowing on the west, but it is quite hidden by débris.

Source: wiktionary

The features of a clough fall well in with a Teutonic idea that Thor, their thunder-god, had smitten these places when in fits of fury and made the deep gashes in the hillsides.

Source: wiktionary

Now we've sorted that out, the easiest way is up the clough and along the bridleway.

Source: wiktionary