The vent, which opened just before 6 a.m. Sunday, is giving off a beautiful glow for visitors to Hawai'i Volcanoes National Park and people driving along Highway 11, said ranger and park spokeswoman Mardie Lane.

"When you are driving up on Highway 11 you can definitely see the glow on low-lying clouds," Lane said. "And some people have seen the lava spattering from the highway."

Pu'u 'O'o is part of an eruption on Kilauea Volcano’s east rift zone that began in 1983. Some of the lava is ponding today in a low area near the vent, according to the U.S. Geological Survey’s Hawaiian Volcano Observatory.

It has been very active in recent weeks, Lane said. On Saturday night, Lane said she saw the orange and yellow reflections of lava on the cloud cover.