  Ground-based gamma-ray astronomy is a powerful tool to study cosmic-ray
physics, providing a diagnostic of the high-energy processes at work in the
most extreme astrophysical accelerators of the universe. Ground-based gamma-ray
detectors apply a number of experimental techniques to measure the products of
air showers induced by the primary gamma-rays over a wide energy range, from
about 30 GeV to few PeV. These are based either on the measurement of the
atmospheric Cherenkov light induced by the air showers, or the direct detection
of the shower's secondary particles at ground level. Thanks to the recent
development of new and highly sensitive ground-based gamma-ray detectors,
important scientific results are emerging which motivate new experimental
proposals, at various stages of implementation. In this chapter we will present
the current expectations for future experiments in the field.
