  The $\bar K^*$ meson in dense matter is analyzed by means of a unitary
approach in coupled channels based on the local hidden gauge formalism. The
$\bar K^*$ self-energy and the corresponding $\bar K^*$ spectral function in
the nuclear medium are obtained. We observe that the $\bar K^*$ develops a
width in matter up to five times bigger than in free space. We also estimate
the transparency ratio of the $\gamma A \to K^+ K^{*-} A^\prime$ reaction. This
ratio is an excellent tool to detect experimentally modifications of the $\bar
K^*$ meson in dense matter.
