Transwarp conduit

A transwarp conduit is a artificial construction that allows travel over great distances.

Between 2373 and 2374, the Borg created a transwarp conduit to the Gamma Quadrant in preparation for an invasion of the Dominion. Their early attempts were stymied by an attack on the assimilated USS Valkyrie (NCC-68816) by the Jem'Hadar and the emergence of Species 8472 in the Delta Quadrant.