The oldest rocks in Shropshire are of Precambrian age and are to be found at Rushton, a mile west of The Wrekin, as schists and gneisses. East of Shrewsbury, on Haughmond Hill, the sedimentary rocks are of somewhat younger Precambrian age, and are being actively quarried for use on roads. The hill itself provides an amazing view across large parts of mid Shropshire.