  We discuss a class of Feynman Integrals containing hidden regions that are
not straightforwardly identified using the geometric, or Newton polytope,
approach to the method of regions. Using Landau singularity analysis and
existing analytic results, we study the appearance of such regions in
wide-angle and forward scattering and discuss how they can be exposed in both
the momentum and parametric representations. We demonstrate that in the strict
on-shell limit such integrals contain Landau singularities that prevent their
direct numerical evaluation in parameter space and describe how they can be
re-parameterised and dissected to circumvent this problem.
