If you want to go from Dorfen to Isen, you will find a beautiful route here. Instead of driving along the boring main street at Watzling it's just a short but really heavy uphill with over 15% slope. At the top you pass the Holzwirt, here you can take a rest before it goes into the wood. The route is idyllic. At the end you will be rewarded with a fast descent to Isen.