It is a 'cold' geyser, meaning the water temperature remains near ambient ground temperature rather than being heated by magma.
The eruption is powered by volcanic CO2 gas pushing upwards from deep layers, effectively turning the well into a natural carbonated water fountain.
The eruption process typically lasts for about 5 to 10 minutes before the pressure dissipates and the cycle resets.
The geological phenomenon was accidentally rediscovered in the 1930s during an attempt to drill a water well.
The water ejected is highly mineralized and carries a distinct iron-rich scent and coloration.
The Wallender Born, also known as the Brubbel, is the only cold-water geyser in the Eifel region of Germany. Unlike thermal geysers driven by volcanic heat, this feature is propelled by pressurized carbon dioxide gas deep within the earth. During an eruption, the geyser ejects water and gas into the air, often reaching heights between four and six meters. The eruption cycle is natural and periodic, occurring roughly every 30 to 45 minutes. The surrounding area features a mineral-rich landscape typical of the Volcanic Eifel. It is situated within the village of Wallenborn in the Daun district. The site is maintained as a natural geological monument accessible to the public.
The wooden viewing platform directly facing the vent, which provides a clear angle of the vertical water spray.
Check the official sign at the entrance to estimate the time since the last eruption to gauge your wait.
Bring waterproof gear or stand at a distance, as wind can carry the mineralized spray onto spectators.
Wear sturdy, closed-toe shoes as the ground around the geyser can be muddy or slippery due to constant moisture.
Do not attempt to touch or taste the water, as the high mineral content and carbonation are intended for observation, not consumption.
Stay behind the marked barriers during an eruption to avoid high-pressure water spray.
