
The image is a circular plaque on a brick wall. The plaque is white and has a black and white illustration of two Boom Towers built in 1344 to defend the approach to Norwich by water. The tower on the left is a tall, cylindrical structure with a pointed top and a flat bottom. It appears to be made of stone or concrete and is surrounded by trees and shrubs.

On the right side of the plaque, there is a text that reads "The Boom Towers were built in 1444. The use of a chain across the water, between the two towers, controlled traffic and prevented the unauthorized entry of vehicles. The eastern tower is known as the Devil's Tower." The text is written in black ink and is centered on the plaque.
