How old is Mount krafla?

Mount Krafla, located in Iceland, is a volcanic system that has been active for approximately 2.4 million years. The most significant eruptive activity occurred in the 18th century, particularly between 1724 and 1729, and again from 1975 to 1984. The age of the current volcanic features, including the caldera and craters, is much younger, formed during these more recent eruptions.