It's a weird daja-vu like situation, but I've just been researching (with
the help of some of the people on this list) a "long barrow" in Cheshire
which, it appears, is in fact a burial mound for cattle slaughtered in the
1745 cattle plague. The mound is scheduled as a barrow, but is rather thin
and long and documentary research is beginning to suggest that it was built
to cover a mass cattle slaughter sometime around 1745-50. This episode was
one of several plagues introduced from the Continent and the measures put in
place to contain it are largely those used today to contain foot and mouth.
Confusion about the site led to its scheduling and a lot of speculation
about the Neolithic of the region, despite it only being 250 years old!
University of Bristol.