A plaque here gives historical details of Torr Vale Mill and Rock Mill. Rock Mill was a huge mill covering all the land in the wooded area between here and location 6 and also extending up the steep slope behind, where you can see the remains of its walls. The mill had varied functions, being in turn a cotton mill, a calico print works and a paper mill. It was demolished in the 1880s. If you look over the wall in front you will see a brown sign which says 'Rock Mill Tailrace'. This marks the exit of a water course (tunnel) that passed through the mill to drive the water-wheel. The exit itself is only visible by descending the steps to the ‘beach’ below.