The Walton Common banjo enclosure is a banjo enclosure on Walton Common, to the north of Walton in Gordano, Somerset, England. It appears to date to the late Iron Age, and may have been a high-status settlement. The term "banjo" refers to the shape. It is a round enclosure approached by a straight avenue, with the enclosure and avenue bounded by banks and ditches. The banks have been worn down and the ditches filled in over time, so it is scarcely noticeable from the ground. It showed up on photographs from the air taken in 1930 and 1946. Since then the site has become more overgrown and is hard to detect even from the air.