Or.... where I learned I am a beginner-intermediate mountain biker, not an expert! Ouch! Ouch! Boom. The entrance to the Dyke trail is just above Irwin Lake on the left - don't go too far or you get to private land. This bike trail goes gently down for 5 miles. Have a non-biker drive to Horseranch to pick you up, as that is where the trail ends. 
However, an "easy" hiking trail can be an "expert" biking trail. And that's the case here. Rocks, branches, ups and downs. Easy walking, hard biking.
However, an "easy" hiking trail can be an "expert" biking trail. And that's the case here. Rocks, branches, ups and downs. Easy walking, hard biking. 
