Obernzell, Hammermuhle and Untergriesbach Loop

Starting near the picturesque town of Passau, Germany, the Obernzell, Hammermuhle, and Untergriesbach Loop is a delightful 10 km (6.2 miles) trail with an elevation gain of approximately 400 meters (1,312 feet). This loop trail offers a medium difficulty rating, making it suitable for moderately experienced hikers.

### Getting There To reach the trailhead, you can either drive or use public transport. If driving, head towards Passau and follow the signs to Obernzell. There is ample parking available near the starting point. For those using public transport, take a train to Passau and then a local bus towards Obernzell. The nearest significant landmark to the trailhead is the Obernzell Castle, a beautiful Renaissance structure that is worth a visit before or after your hike.

### Trail Overview The trail begins near Obernzell Castle and quickly immerses you in the lush Bavarian forest. The first section of the trail is relatively flat, allowing you to warm up as you walk along the banks of the Danube River. After about 2 km (1.2 miles), you will start to ascend gradually, gaining around 100 meters (328 feet) in elevation over the next 3 km (1.9 miles).

### Hammermuhle At approximately the 5 km (3.1 miles) mark, you will reach Hammermuhle, an old mill that has been converted into a charming guesthouse. This is a great spot to take a break, enjoy a snack, and perhaps learn a bit about the history of the mill, which dates back to the 18th century. The surrounding area is rich in flora and fauna, so keep an eye out for deer, foxes, and a variety of bird species.

### Untergriesbach Continuing on, the trail takes you through dense forest and open meadows, offering stunning views of the Bavarian countryside. The next significant landmark is Untergriesbach, a quaint village known for its traditional Bavarian architecture and friendly locals. Here, you can explore the village church, which has stood since the 12th century, and perhaps grab a bite to eat at one of the local inns.

### Final Stretch The final stretch of the trail involves a descent back towards Obernzell. This section is a bit steeper, so take your time and watch your footing. The descent offers panoramic views of the Danube River and the surrounding hills, making it a perfect spot for some memorable photos.

### Navigation and Safety For navigation, it is highly recommended to use the HiiKER app, which provides detailed maps and real-time updates. The trail is well-marked, but having a reliable navigation tool will ensure you stay on track.

### Historical Significance The region around Passau has a rich history, with settlements dating back to Roman times. Obernzell Castle itself was built in the 16th century and has served various roles, from a defensive fortress to a residence for nobility. The trail also passes through areas that were historically significant for trade and agriculture, adding an extra layer of interest to your hike.

This loop trail offers a perfect blend of natural beauty, historical landmarks, and moderate physical challenge, making it a rewarding experience for any hiker.