Hvannadalshnúkur or Hvannadalshnjúkur is a pyramidal peak on the northwestern rim of the summit crater of the Öræfajökull volcano in Iceland and is the highest in Iceland.
An official measurement completed in August 2005 established the height of the mountain as 2,109.6 metres
The route to the top is a popular climb through numerous and frequently hidden crevasses, and, because of this, the climb calls for experienced mountain guides.
Source: https://en.wikipedia.org/wiki/Hvannadalshn%C3%BAkur