  The ambient interstellar environment of wind- and supernova-driven
superbubbles strongly affects their evolution, but its properties are rarely
well-determined. We have therefore obtained HI aperture synthesis imaging of
the environment around three similar, optically-selected superbubble nebulae in
the Large Magellanic Cloud. The resulting HI maps show that the ambient gas
distribution around these superbubbles differ to an extreme: DEM L25 shows no
neutral shell component, but is nestled within an HI hole; DEM L50 shows a
massive neutral shell component, but is otherwise within an HI void; and DEM
L301 shows no correspondence at all between the optical nebula and HI
distribution. There is also poor correspondence between the HI and optical
kinematics. These results strongly caution against inferring properties of the
ambient neutral environment of individual superbubbles without direct
observations. Finally, all three objects show some evidence of shock activity.
