East of Vancouver near Mission, the Stave Lake East area has routes open to ATV Riding. The terrain is mostly rocky abandoned logging roads; there isnt much mud. There are some very steep trails and washed out bridges up a couple of the trails.
To reach the trailhead, take the Lougheed Hwy east from Mission; a few kilometers past Mission, turn north onto Sylvester Rd (at the Husky gas station). Follow Sylvester Rd until it turns into a gravel road; you can unload your quad here. There are lots of old trails and shelf roads, and if you take the right route you will find yourself in Hemlock Valley.
Note: As of August 2008, the Ministry of Forests Regulations require all ATV drivers to be at least 16 years of age and have a valid drivers license to ride on Forest Service Roads. In addition, the ATV must have valid third-party liability insurance, which is typically around $120 per year. The Conservation Officers will issue a $600 ticket if you do not have proof of insurance.