Why can I no longer easily navigate inside of this mesh? While originally modeling a mesh, I was able to easily re-orient my view to inside of the mesh.  In the process, I made the following changes:


made the mesh completely hollow (removed some extraneous faces from the inside)
added texture


Now I can't seem to navigate or zoom into the mesh like I was doing earlier.  All I can do is get ridiculously close to the outer surface.  Even in wireframe mode, I either can't do this or it seems as if everything is zoomed in much too close to do anything productive.
You're likely in Orthographic view, rather than Perspective View. Press 5 on your numeric keypad to toggle between the two.

If for some reason you want to stay in orthographic view and still see the inside of the mesh.

Some options:


Hide faces that obscure the interior.
Use mask modifier on meshes to mask out some geometry.
Use view-clipping feature (&#9095; AltB)
Invert the normals of your mesh (&#9096; Ctrl&#8679; ShiftN) and enable backface culling in 3D view > Properties