Just a few kilometers from the center of Brussels, the Sonian Forest hides a corner that has inspired the most astonishing tales. Nicknamed the “Bermuda Triangle” by regulars, this wooded area has intrigued walkers venturing there for decades. Between local folklore and very rational explanations, the mystery continues to fascinate.
A magnificent… and bewildering forest
Located between Groenendaal, Hoeilaart, Jezus-Eik, and the outskirts of Tervuren, this part of the Sonian Forest has a unique feature… its immense cathedral-like beech forest. The trees, standing tens of meters tall, create a spectacular yet particularly uniform landscape. The result? The paths often look alike, and visual landmarks quickly disappear. After a few turns, even regular visitors may feel as though they’ve returned to the same spot. This sensation of going in circles has largely contributed to the legend’s origins.
The trap of the valleys and the silence
The terrain alsoplays an important role. Around the Château des Trois Fontaines and the neighboring valleys, the trails wind through slopes that can be surprisingly steep. When the mist settles or the light begins to fade, the dense canopy significantly reduces visibility. Even more surprising: the sounds of the city seem to disappear. Although Brussels and the Ring are never far away, the valleys absorb some of the surrounding noise. Deprived of their usual landmarks, some hikers feel as though they are venturing into a forest far wilder than it actually is.
An urban legend fueled by very real facts
As is often the case, reality alone explains what appears to be a mystery. Every year, emergency services are called to assist hikers, cyclists, or mushroom pickers who have lost their way after straying from the marked trails. Rumors of magnetic anomalies or malfunctioning compasses regularly fuel discussions. However, forest rangers point instead to the dense canopy of trees, which can sometimes interfere with the accuracy of smartphones and GPS devices. This doesn’t stop the “Bermuda Triangle” of the Sonian Forest from remaining one of the most fascinating tales of Brussels’ natural heritage. An excellent reason to go explore the forest— while keeping your map close at hand.
