  For long wavelengths three-dimensional connected metallic wire meshes are
impenetrable by light and have an electromagnetic response similar to that of
an electron gas below the plasma frequency. Surprisingly, here it is shown that
when two opaque metallic meshes are spatially-interlaced the combined structure
enables an anomalous light tunneling in the long wavelength regime. The effect
is due to the destructive interference of the waves scattered by the two wire
meshes, which leads to a Fano-type resonance.
