Iceland’s Mount Fagradalsfjall volcano, located in one of the country's most populated areas, erupted Monday night, opening a 2.5 mile long crack in the earth and sending a river of lava toward nearby towns. The eruption was anticipated by meteorologists monitoring the volcano. It took place about 2.4 miles northeast of the fishing village of Grindavík and the Svartsengi geothermal power plant, in the Reykjanes Peninsula. The volcano erupted after weeks of earthquake activity, the Icelandic Meteorological Office reported. Authorities evacuated more than 3,400 people from Grindavík as a precaution in November, when seismic activity began to increase. Swipe above and tap the link in our bio to learn more about Monday's eruption.