The great scar of the alum workings on Carlton Bank, just beginning to regenerate but still large areas are sterile. In the distance across the yellow fields of rapeseed Roseberry can be seen, just a pimple on the horizon. The alum works date from 1680 and operated for almost 100 years until the price of alum became too low for the operation to be feasible. In the 19th century the area underwent a second major disturbance with jet mining. Nevertheless in 1997, prior to stabilisation work on the slope, an archaeological dig found the remains of steeping pits, cisterns and troughs. These were backfilled as a means of protecting the remains.