Tallest cold-water geyser

The highest 'cold water' geyser is the Geysir Andernach, which typically blows water to heights of 30-60 m (98-196 ft), and is located in Andernach, Germany. Unlike regular geysers, so-called 'cold-water' geysers are formed by cold ground water dissolving large amounts of carbon dioxide that was originally released through cracks from the Earth's upper mantle and became trapped beneath relatively impermeable rock.) and Carbon dioxide effectively "charging" the water (similar to a soda bottle) which can then erupt, almost always through a drilled well. The Andernach well is 350 m (1,148 ft) deep and was re-drilled in 2001, following its closure in 1957 due to war-torn damage. The highest recorded height of the Geysir Andernach is 61.5 m (201 ft 9 in) on 19 September 2002.

The average volume of water ejected per eruption is 7,800 litres (2,060.5 US gal; 1,715 UK gal)

The average interval between eruptions is 90-110 minutes; one eruption lasted 7-8 minutes.