Thunder Mountain Trail is primitive, steep and poorly marked. Follow the main tread and look for old blazes on trees.
The upper portion of Thunder Mtn Trail ends at the Lake Creek Road (#028). Ride this road to the north to connect to Henry Creek Trail.
There is a segment of Thunder Mtn Trail that continues below the road toward Williams Lake but it is even more primitive. Another continues west from Moyer Peak to Moyer Creek but we have yet to explore this one...let us know what you find out!