ha.
i love this.
the chinese had the great wall of china
the scots have hadrians wall
the welsh have a dyke.

king offa had a ditch dug for him, and a dyke running along it made from the soil that used to be in the ditch. here and there it was fortified, but realistically, probably with a couple of fence-posts and bindweed. it ran/runs the length of the border with wales, and it's purpose was to keep the welsh out. the sneaky welsh used to move the border posts (literally posts) a few feet every other night or so, and were taken to task on it a few times, until offa had the dyke built.
or, at least, thats how i think it went. the only thing that really made my day in history classes was finding out that in the domesday book, my hometown, bishops castle, is described as being "a place for vagrants and beggars"
it still is to this day, although most of them have enough money to drink in the pub each night.

anyway, a stitched three-photo shot, on two crosses, near mainstone, on the offa's dyke.