Lava lake visible atop Hawaii's Kilauea volcano

The U.S. Geological Survey says a lake of lava has come into view atop Hawaii's Kilauea volcano, and a burst of seismic activity has shaken the summit in recent days.

It's the first time the lava lake has been visible since May 2015.

"Kīlauea Volcano continues to erupt at its summit and from its East Rift Zone," the USGS, wrote in an update on Monday.

Activity slowed over the weekend, "but switched back to inflation at midnight," according to the Geological Survey.

At least one earthquake was felt along with several smaller events.

The volcano alert remains at "watch," one level down from the USGS's highest "warning" alert.

The agency said that at this time the lava flow poses no threat to nearby communities.

Kilauea is one of the world's most active volcanoes. A current lava flow into the Pacific Ocean has drawn thousands of visitors from around the world to Hawaii Volcanoes National Park.