  Action and topological charge densities of the Euclidean-space QCD vacuum are
visualized in three-dimensional slices of a 24^3 x 36 space-time lattice and an
order-a^2 improved 16^3 x 32 lattice. Features include instanton anti-instanton
annihilation and a comparison of standard and over-improved actions used in the
smoothing of the gauge fields.
