  Kerr-Schild solutions of the Einstein-Maxwell field equations, containing
semi-infinite axial singular lines, are investigated.
  It is shown that axial singularities break up the black hole, forming holes
in the horizon. As a result, a tube-like region appears which allows matter to
escape from the interior without crossing the horizon. It is argued that axial
singularities of this kind, leading to very narrow beams, can be created in
black holes by external electromagnetic or gravitational excitations and may be
at the origin of astrophysically observable effects such as jet formation.
