  We consider the gravitational collapse of a dust cloud in an asymptotically
anti de Sitter spacetime in which points connected by a discrete subgroup of an
isometry subgroup of anti de Sitter spacetime are identified. We find that
black holes with event horizons of any topology can form from the collapse of
such a cloud. The quasilocal mass parameter of such black holes is proportional
to the initial density, which can be arbitrarily small.
