  Observational evidence for dark matter stems from its gravitational
interactions, and as of yet there has been no evidence for dark matter
interacting via other means. We examine models where dark matter interactions
are purely gravitational in a Randall-Sundrum background. In particular, the
Kaluza-Klein tower of gravitons which result from the warped fifth dimension
can provide viable annihilation channels into Standard Model final states, and
we find that we can achieve values of the annihilation cross section, $\left<
\sigma v \right>$, which are consistent with the observed relic abundance in
the case of spin-1 dark matter. We examine constraints on these models
employing both the current photon line and continuum indirect dark matter
searches, and assess the prospects of hunting for the signals of such models in
future direct and indirect detection experiments.
