  The DArk Matter Particle Explorer (DAMPE) mission revealed a break in the
spectrum of cosmic-ray electons and positrons. This is associated with an
excess above the expected backgrounds at energies around 1 TeV. Several authors
have argued that such an excess can be explained in terms of dark matter models
that feature heavy leptophilic WIMPs. These models, however, require some form
annihilation enchancement above that expected from the Milky-Way galactic
centre. This can take the form of either a local over-density near to our solar
system or some form of Sommerfeld enhancement of the annihilation rate. In this
work we will explore the detectability of local over-densities using gamma-ray
and neutrino observatories. We conclude that KM3NET may be the only up-coming
high-energy instrument capable of ruling out the presence of such objects.
However, in the case where the local over-density is an Ultra-Compact Mini
Halo, CTA can also explore the parameter space of these proposed dark matter
models.
