This is one of our favroite hikes that we like to do at least a couple times per year. On October 7, 1965 there was a horrible train wreck that killed 4, the trains were being used in the making of the Oroville Dam. The train tunnel is no longer used for trains, they have turned it into a great walking/biking trail. If you push a button on the outside of the tunnel, lights will turn on to light your walk path. If you would like to read more about the disaster check out this website, it is very interesting.
Driving directions,
From downtown Oroville, head east on Montgomery Street (It turns into Orange Avenue). Turn left on Long Bar Road. Turn left on Colina Way. Turn Left on Pinemont St. Turn Right on Lausen St. Turn left on Lakeland Blvd. Go to end of paved road. A few feet past the paved road you will see a dirt road on the right. Hike around the gate and go down the hill (you can either hike or bike). When you get to the railroad bridge veer right and just follow the shoreline. You can't miss it. Additionally, there are several "Trailhead" signs to follow that may be of assistance to you.