  A TeV gamma-ray signal from the direction of the Galactic center (GC) has
been detected by the H.E.S.S. experiment. Here, we investigate whether
Kaluza-Klein (KK) dark matter annihilations near the GC can be the explanation.
Including the contributions from internal bremsstrahlung as well as subsequent
decays of quarks and tau leptons, we find a very flat gamma-ray spectrum which
drops abruptly at the dark matter particle mass. For a KK mass of about 1 TeV,
this gives a good fit to the H.E.S.S. data below 1 TeV. A similar model, with
gauge coupling roughly three times as large and a particle mass of about 10
TeV, would give both the correct relic density and a photon spectrum that fits
the complete range of data.
