  We introduce a model describing vortices in strongly disordered
three-dimensional superconductors. The model focuses on the topological
defects, i.e., dislocation lines, in an elastic description of the vortex
lattice. The model is studied using Monte Carlo simulations, revealing a glass
phase at low temperatures, separated by a continuous phase transition to the
high temperature resistive vortex liquid phase. The critical exponents nu ~ 1.3
and eta ~ -0.4 characterizing the transition are obtained from finite size
scaling.
