Complex terrain has exposure to multiple overlapping avalanche paths or large expanses of steep, open terrain. Here, there are multiple avalanche start zones, many terrain traps below the open terrain, and minimal options to reduce exposure. Check out the slideshow for examples of complex terrain:
Travel in complex terrain requires a thorough assessment of conditions, advanced route-finding and terrain-assessment skills, and a diligent approach to all aspects of avalanche risk management. If you lack experience or are unsure of your skills, it is best to stay out of complex terrain unless conditions are entirely favourable. If this is the type of terrain you seek out, be patient and wait for the right conditions.