This geyser located in the German town of Andernach is the tallest cold water geyser in the world. The geyser sprang forth the first time in 1903 when a borehole was drilled in search of mineral springs in the vicinity of the Namedyer Werth peninsula. Initially the geyser was used to produce and bottle mineral water, but damages suffered by the geyser during the first World War caused the bottling plant to cease operation. After the war ended, another company took the site on lease and began extracting carbon dioxide for the next thirty years when technical problems caused the site to shutdown again. The geyser was finally reactivated in 2006 as a tourist attraction. Andernach Geyser typically erupts every two hours, for six to eight minutes at a time. It is located within a nature reserve, which is open April 1st to October 31st each year. The bitter cold winters make this area closed November 1st to March 31st.