This review summarises the current status of the Galactic TeV (1012 eV) gamma-ray source population. It also brie y looks at the future beyond the current generation of TeV gamma-ray facilities, and highlights the role of the interstellar medium (ISM) in helping to resolve some of the challenges in interpreting the wealth of results which have been found in recent years.

ABSTRACT
1. INTRODUCTION
2. THE GALACTIC TeV GAMMA-RAY SOURCE POPU-LATION
3. FUTURE TeV GAMMA-RAY OUTLOOK
4. ROLE OF THE ISM IN UNDERSTANDING TeVGAMMA-RAY EMISSION
REFERENCES

• Gavin Rowell(School of Physical Sciences, University of Adelaide)