  We discuss the possibilities of extragalactic large-scale studies behind the
Zone of Avoidance (ZOA) using complementary multi-wavelength data from optical,
systematic blind HI, and near-infrared (NIR) surveys. Applying these data to
the NIR Tully-Fisher relation permits the mapping of the peculiar velocity
field across the ZOA. Here, we present results of a comparison of galaxies
identified in the rich low-latitude cluster Abell 3627 in the B-band with NIR
(DENIS) data, and cross-identifications of galaxies detected with the blind
Parkes HI Multibeam survey with NIR data - many of which are optically
invisible.
