a nearly 400-foot-long linear structure off the coast of France [...] it measures roughly 66 feet wide at the base and stands roughly 7 feet tall
Sounds more like a jetty or causeway than a wall.
a nearly 400-foot-long linear structure off the coast of France [...] it measures roughly 66 feet wide at the base and stands roughly 7 feet tall
Sounds more like a jetty or causeway than a wall.