The volcano has been visited by more than 30,000 people despite Iceland's coronavirus lockdown.
Steam and lava spurted Monday from a new fissure at an Icelandic volcano that began erupting last month, prompting the evacuation of hundreds of hikers who had come to see the spectacle.
The new fissure, first spotted by a sightseeing helicopter, was about 500 meters (550 yards) long and about a kilometer (around a half-mile) from the original eruption site in the Geldinga Valley.
The Icelandic Department of Emergency Management announced an immediate evacuation of the area.
It said there was no imminent danger to life due to the site’s distance from popular hiking paths.
"We had two new cracks opening up right around where people were walking, so [...] we just clear out the area to figure out what is happening," said Sigurjon Veigar, search and rescue team member.
Live footage from the area showed small spouts of lava coming from the new fissure.
The Icelandic Meteorological Office said the new volcanic activity wasn't expected to affect traffic at nearby Keflavik Airport.
The long-dormant volcano on the Reykjanes Peninsula in southwest Iceland flared to life on March 20 after tens of thousands of earthquakes were recorded in the area in the past three weeks.
It was the area’s first volcanic eruption in nearly 800 years.
The volcano’s proximity to Iceland’s capital, Reykjavík, about 32 kilometers (20 miles) away, has brought a steady stream of tourists to the area, even with the country in partial lockdown to combat the coronavirus.
Around 30,000 people have visited the area since the eruption began, according to the Icelandic Tourist Board.