  After the successful measurement of the mixing angle $\theta_{13}$, the
determination of the neutrino mass hierarchy has become a priority for future
neutrino experiments. We propose a conventional $\nu_\mu$ beam with neutrino
energies in the range 2-8 GeV aimed at a Mton underwater detector at the
"magic" baseline of 2600 km. In this constellation it is sufficient to
distinguish ($\nu_\mu$ induced) track-like interactions from cascade-like
interactions with moderate purity to determine the mass hierarchy.
