River Wave Thun

Welle Mühleschleuse - The Monster Wave

The Welle Mühleschleuse, known as The Monster, lives up to its name not only due to its impressive power but also because of its tendency to cause injuries, snapped fins, and even broken surfboards. This spot should be approached with caution and is best suited for experienced river surfers only.

A Dangerous Beauty

Surfing at the Mühleschleuse is like surfing a reef break in a shallow spot. The wave is situated just above the riverbed, with rocks jutting just below the water's surface on both sides of the wave, waiting to catch the unwary surfer. Injuries are a common occurrence, and moderate to severe accidents are a real possibility. Due to the nature of the spot, it is recommended to avoid nose dives, surf with caution around rocks and bridge pillars, and wear booties to protect against rocks and glass shards in the water.

Despite the risks, Mühleschleuse is located in a beautiful area, central to the old town and Bälliz, surrounded by bars and restaurants where surfers and spectators can relax and enjoy the action. There is ample space to lock up your bike right at the entrance, although there are only a few, time-limited, paid parking spaces nearby at Stadthofplatz.

Surfing Conditions

• Rope-free surfing is the norm at Mühleschleuse. Only the rear wave occasionally uses a rope for assistance. If you plan to use a rope, make sure to attach it to the designated hook and ensure it doesn't get caught in the current. Surfing without a rope is already risky enough, and adding a rope to the mix can increase the danger of injury.
• After each ride, surfers are advised to quickly position themselves flat in the water, facing downstream. The strong eddies to the left and right of the wave are your friends—they'll bring you back to the wave. If you miss them, be cautious of the bridge pillar and the shallow area just after the bridge. If you manage to avoid these hazards, you can safely exit the water at either side using the stairs, where you'll likely be greeted by friends or a boisterous market vendor at Bälliz.

The Rear Mühle Wave

The rear Mühle wave only works when there’s sufficient water flow, typically in the spring. This wave is also best suited for advanced river surfers, as it is located near shallow spots and very close to the bridge pillar, adding another layer of difficulty and danger.

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