  We posit the existence of the Marshland within string theory. This region is
the boundary between the landscape of consistent low-energy limits of quantum
gravity, and the swampland of theories that cannot be embedded within string
theory because they violate certain trendy and obviously uncontroversial
conjectures. The Marshland is probably fractal, and we show some pretty
pictures of fractals that will be useful in talks. We further show that the
Marshland contains theories with a large number of light axions, allowing us to
cite lots of our own papers. We show that the Marshland makes up most of the
volume of the landscape, and admits a novel, weakly broken $\mathbb{Z}_2$
Marshymmetry that we find strong evidence for by considering a carefully
crafted example.
