Andernach Geyser, Cold-water geyser in Andernach, Germany.
Andernach Geyser is a cold-water geyser on the Namedy Peninsula in the Rhine, fed by an artesian well from a depth of 350 meters (1,150 feet). The fountains shoot upward at intervals of roughly two hours and can reach anywhere between 30 and 60 meters (100 to 200 feet), depending on gas pressure.
A borehole was drilled in 1903 to extract mineral water and accidentally released volcanic carbon dioxide that drives the eruptions. Between 1957 and 2006 the site remained closed until it was reactivated for visitors and reopened as a natural monument.
The name Namedy Peninsula recalls the old manor house that once stood nearby, while visitors today watch the regular eruptions from the boat deck. Many travelers use the waiting time between eruptions to explore the riverside landscape or take photos of the rising water.
The visit begins at the museum on the Rhine waterfront, where a tour explains how the eruptions occur before the boat departs for the peninsula. The total duration is about three hours, and comfortable shoes are recommended for the paths around the landing area.
The water from the well maintains a constant temperature of about 20 degrees Celsius (68 degrees Fahrenheit) because it is pushed upward by volcanic gas rather than heat. This characteristic sets the eruption apart from hot springs in Iceland or North America.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
