Lake Mummelsee: Hornisgrinde Hikes & Ditching the Tourists

High-altitude glacial waters tucked directly beneath the Black Forest's highest peak offer a far more rugged experience than the souvenir-heavy parking lot suggests. While the lake's immediate shoreline can feel like a tourist circus, its real value lies in the moody atmosphere of the dark pines and the dramatic shift in landscape as you ascend toward the clouds. Most people stick to the flat paved loop around the water, but the true spirit of the region is found by scrambling up the rocky paths where the air thins and the crowd noise vanishes. It is a place of deep legends and even deeper water, best experienced when the mist is rolling off the surface and the kitsch of the lakeside hotel feels a world away. Reaching this spot requires navigating the winding B500 Schwarzwaldhochstraße, a drive that is iconic but can become congested with motorbikes and tour buses by mid-morning. If you are coming from Baden-Baden, aim to arrive before 9:30 AM to secure a spot in the main lot before the throngs descend. You only need about ninety minutes here if you are just circling the water, but those planning to tackle the Hornisgrinde peak should budget three hours. Avoid visiting on sunny Sunday afternoons unless you enjoy shoulder-to-shoulder walking; a misty Tuesday offers a far more authentic vibe. The local bus 245 connects the lake to nearby towns if you want to skip the parking headache entirely. Smart visitors bypass the crowded main terrace and head straight for the Katzenkopf viewpoint, which provides a much better angle for photos without strangers in your frame. Another pro move is to ignore the generic postcard stands and walk ten minutes deeper into the woods toward the smaller, quieter trails where you can actually hear the wind in the needles. If the lakefront is packed, grab a slice of authentic gateau at the Berghotel Mummelsee and take it to a higher bench rather than fighting for a table. Many travelers fail to realize that the most impressive geological features are actually located above the waterline, specifically the unique moorland landscape that begins just past the initial steep climb. Historical significance here is rooted in the lake's status as one of the few remaining glacial 'kar' lakes from the last ice age, a fact that explains its surprising depth and dark hue. This geological rarity shaped local folklore for centuries, fueling tales of a hidden underwater kingdom and its protective king. While the modern statues attempt to capitalize on these myths, the real history is found in the stone boundary markers and the resilient flora that survives the harsh winters at 1,036 meters. Visiting in late autumn provides the most visceral sense of this history, as the changing larch needles turn gold against the permanent, somber green of the ancient firs.