Mount Kilauea on Hawaii’s Big Island erupted for nine continuous hours on Wednesday, shooting fountains of lava reaching up to 1,200 feet at times. The volcano has erupted 28 times since last December.

Another explosive episode of Kilauea’s volcanic activity came and went Wednesday after Episode 28 of the ongoing eruption in Halemaumau Crater saw eight hours of high fountaining.

Snowshoeing on Kīlauea? High fountain episodes pose new challenges to monitoring - Features | Hawaii Tribune-Herald

Essentially, gas pistoning is a shallow, degassing-driven rise and fall of a lava surface. Often these pistons occur in narrow conduits — although they can happen in larger lava lakes and even in lava channels — and in bunches, as part of a series.

A new eruption started early this morning at Halemaʻumaʻu Crater in Hawaiʻi Volcanoes National Park. Episode 28 of the ongoing volcanic<a class="excerpt-read-more" href=" More

Lava is spewing roughly 1,200 feet into the air at Mount Kilauea. You can watch live above. The U.S. Geological Survey (USGS) says there

KILAUEA, Hawai'i (Island News) -- The 28th episode of Kilauea abruptly ended after hours of fountaining on Wednesday. The eruption ended at 1:20 p.m.

Hawaiian Volcano Observatory field engineers on July 10, 2025, visited monitoring stations downwind of the Kīlauea summit eruptive vents. They wore snowshoes, as the large footprint keeps the field engineers walking on top of the frothy pumice everywhere instead of sinking through it. (Photo Courtesy: US Geological Survey/M.Warren)

An Alaskan volcano that has been inactive for more than 100 years is showing signs of rumbling, according to scientists. However, there's a chance that the activity could be signs of a pending avalanche, rather than a volcanic eruption, NASA said.