Grosses Loch, Teufelskammer and Teufelsmühle via Albtalweg

Starting near the charming town of Calw, Germany, the Grosses Loch, Teufelskammer, and Teufelsmühle via Albtalweg trail offers a captivating 11 km (approximately 6.8 miles) loop with an elevation gain of around 500 meters (1,640 feet). This medium-difficulty hike is perfect for those looking to explore the Black Forest's natural beauty and historical significance.

### Getting There To reach the trailhead, you can either drive or use public transport. If driving, head towards Calw and look for parking near the Albtalweg trailhead. For public transport, take a train to Calw station. From there, local buses or a short taxi ride can bring you to the starting point.

### Trail Overview The trail begins near Calw, a town known for its picturesque half-timbered houses and historical significance as the birthplace of the famous author Hermann Hesse. As you set off, you'll quickly find yourself immersed in the dense, enchanting forests of the Black Forest region.

### Grosses Loch About 3 km (1.9 miles) into the hike, you'll encounter Grosses Loch, a fascinating geological formation. This "Great Hole" is a sinkhole that has intrigued geologists and hikers alike. The area around Grosses Loch is lush with vegetation, and you might spot various bird species and small mammals.

### Teufelskammer Continuing for another 2 km (1.2 miles), you'll reach Teufelskammer, or "Devil's Chamber." This section of the trail features dramatic rock formations and narrow passages that give it an almost mystical atmosphere. The elevation gain here is noticeable, so take your time navigating the rocky terrain. The flora in this area includes ancient ferns and moss-covered rocks, adding to the ethereal feel.

### Teufelsmühle After another 3 km (1.9 miles), you'll arrive at Teufelsmühle, or "Devil's Mill." This historic site was once a working mill and now serves as a reminder of the region's industrial past. The mill is situated near a small stream, providing a serene spot to rest and enjoy a snack. The elevation gain to this point is around 400 meters (1,312 feet), so you'll have a bit more climbing to do before the descent.

### Wildlife and Flora The Black Forest is home to a diverse range of wildlife. Keep an eye out for deer, foxes, and various bird species. The flora is equally diverse, with towering pines, oaks, and a rich understory of shrubs and wildflowers. Depending on the season, you might also encounter mushrooms and berries.

### Navigation For navigation, it's highly recommended to use HiiKER, 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.

### Final Stretch The last 3 km (1.9 miles) of the trail loop back towards Calw, offering a gentle descent through more forested areas. The total elevation gain for the hike is around 500 meters (1,640 feet), making the descent a welcome relief. As you approach the end of the trail, you'll pass through scenic meadows and small clearings, providing a perfect opportunity to reflect on the journey.

This trail offers a blend of natural beauty, geological wonders, and historical landmarks, making it a must-visit for any hiking enthusiast exploring the Black Forest region.