Hverfandi

Hverfandi is an approximately 100-metre-high man-made overflow waterfall, created to carry off spillover water from Hálslón, the reservoir of the Kárahnjúkar hydropower plant. Its name (meaning "the vanishing one") refers to the fact that it comes and goes depending on whether Hálslón is full. When it was active in September 2013, about 70 cubic metres of water per second fell into the gorge, and at its most powerful it becomes the most powerful waterfall in Europe. Hálslón has begun overflowing as early as 28 July (in 2010) and as late as 9 October (in 2015), and has stopped overflowing as early as 17 September (in 2020) and as late as 21 October (in 2019).

Translated from Icelandic Wikipedia · CC BY-SA 4.0