Start at what is presumably a public parking lot at Eberstein train station.
Don't take the one on the other side; that's a company parking lot.
Follow the path to the medieval gallows.
If you follow the Felsentor sign for 1.5 km, you'll end up in nowhere!
At the gallows, go under the electric fence into the meadow. No dogs when cows are grazing!
Follow the trail across the meadow up the slope. This trail passes under a barbed wire fence. Crawl under it and follow the fence to the top of the meadow.
There you'll find the first municipal sign for Felsentor. Despite fallen trees, the path is clearly visible; pay attention to tree markings that point the way up the slope.
Turn left at the warning signs for the quarry, follow the markings, and you'll arrive below the gate. The closed section probably once led above the gate.
You can now climb up through the gate to get a view of the valley.