The St Ives Mines have suffered over the years, with few obvious remains left. Large scale mining here generally declined during the latter part of the nineteen century, due to the low Tin prices. By 1890 all the mines had closed. In 1905 there was a slight resurgance when the price of Tin again rose, St Ives Consols and Giew Mines were the last to work, Giew was the final mine to close in 1922. The mines in this area were well known for huge underground ore bodies known as Carbonas, these were principally found in St Ives Consols and Rosewall Hill Mine, after they were mined out they remained as huge empty caverns, now silent and filled with dark water.