High Quality Content by WIKIPEDIA articles! Somerset is a historic county in the south west of England. There is evidence of human occupation since prehistoric times with hand axes and flint points from the Palaeolithic and Mesolithic eras, and a range of burial mounds, hill forts and other artifacts dating from the Neolithic, Bronze and Iron Ages. The oldest dated human road work in Great Britain is the Sweet Track, constructed across the Somerset Levels with wooden planks in the 39th century BCE.