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The cracks form perpendicular to the nearest cooling surface - typically the top and bottom of the flow - and propagate inward as the interior cools. The curves here indicate that the base of this basalt flow was not a horizontal plane but "hommocky", creating a curved cooling surface
(public domain, screen capture video from the V1 web camera)
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Mt. Kilauea is the world’s most active volcano. It sits atop the Hawaii Hotspot in the central Pacific Ocean and had a decades-long eruption from 1983 to 2018. Eruptive activity started up again in December 2020 and continued into 2026. Kilauea lavas are basaltic in composition, but the physical appearance of Kilauea’s output varies. Many of Kilauea’s eruptions occurred along its East Rift Zone, a fracture system extending ~eastward from the summit vent area. Seen here is lava erupting at the summit of Kilauea Volcano from 3:34 to 3:35 PM, local time, on 14 June 2026. This is the high fountaining phase of "episode 49". "Episode 1" of the current eruption series started on 23 December 2024.
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Information from the United States Geological Survey (USGS):
Episode 49 of the ongoing Halemaumau eruption ended abruptly at 5:05 PM Hawaii Standard Time on 14 June after 7.5 hours of continuous lava fountaining.
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4:33 AM, 14 June 2026:
Precursory overflows from the north vent began at 4:10 AM Hawaii Standard Time this morning and were fed by 10-15 feet (3-5 meter) dome fountains. The flow stagnated and lava drained back at 4:30 AM Hawaii Standard Time.
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6:10 AM, 14 June 2026:
A second precursory overflow began at 5:59 AM Hawaii Standard Time fed by a 15 foot (5 meter) high dome fountain. Alert levels were raised to orange / watch at 4:45 AM Hawaii Standard Time this morning. Onset of episode 49 fountains is most likely today or tomorrow, June 14-15.
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7:19 AM, 14 June 2026:
The precursory overflow that began from the north vent at 5:59 AM Hawaii Standard Time stopped at 7:04 AM Hawaii Standard Time as lava drained back into the vent. The summit deflation that accompanied this small eruption stopped with the end of the overflow.
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9:42 AM, 14 June 2026:
Episode 49 fountaining began at 9:32 AM Hawaii Standard Time, marked by a rapid increase in summit tremor along with ongoing summit deflation. Fountains are currently 50-75 feet high and are expected to grow to 600-800 feet within the next 1-2 hours.
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10:02 AM, 14 June 2026:
The north vent fountain is now about 300 feet (90 meters) high and growing. The plume is up to approximately 12,000 feet (3700 meters) above sea level and moving to the southwest.
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10:44 AM, 14 June 2026:
The north vent fountains are now about 700 feet (210 meters) high and creating more ash and tephra. The plume cloud is now at approximately 17,000 feet above sea level and is moving mostly to the southwest of Hawaii Volcanoes National Park.
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12:02 PM, 14 June 2026:
The north vent fountain is now averaging about 600 feet (185 meters) high. Maximum effusion rate during the highest fountains was about 420 cubic yards per second (320 cubic meters per second). Lava has covered about 30-40% of the floor of Halemaumau.
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1:25 PM, 14 June 2026:
The north vent fountain has dropped to about 400 feet (120 meters) high and is feeding a flow along the south side of Halemaumau Crater. Summit tilt at the Uekahuna tiltmeter has dropped over 10 microradians and produced over 4 million cubic yards of lava.
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5:14 PM, 14 June 2026:
Episode 49 ended at 5:05 PM Hawaii Standard Time after 7.5 hours of fountaining. The north vent fountain dropped rapidly from 200-300 hundred feet (60-90 meters) just after 5 PM and then began jetting tephra in bursts for the last 2-3 minutes.
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Locality: Halemaumau Crater, southwestern corner of Kilauea Crater (Kilauea Caldera), southeastern Hawaii, central Pacific Basin
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Info. at:
The obelisks stand in a large reflective pool, set back from the central pathway, symbolising the distance that separated Australias prisoners of war from their homes and their loved ones.
Complex basalt cliffs along Crooked River, showing evidence of repeated basalt flows over millions of years and the discontinuities between them, adjacent to Crooked River Rd., SW of the Maury Mountains, Crook Co., OR, 11 Jul 2022.
Oenanthe lugens basalti, Basalt Wheatear, Mourning Wheatear (warriae), Oenanthe (lugens) warriae, סלעית הבזלות, Базальтовая траурная каменка
Gerðuberg
Gerðuberg is a spectacular basalt cliff on the southern coast of the Snæfellsnes Peninsula in West Iceland. The cliff is famous for its remarkably symmetrical hexagonal basalt columns, formed when lava cooled and contracted thousands of years ago. Rising in orderly vertical formations, Gerðuberg is considered one of Iceland’s finest examples of columnar basalt and is a popular stop for photographers and geology enthusiasts.
Snæfellsnes Peninsula Often called "Iceland in Miniature," the Snæfellsnes Peninsula is one of the country's most diverse regions, featuring volcanoes, glaciers, lava fields, black-sand beaches, fishing villages, waterfalls, dramatic cliffs, and rugged coastlines. Dominating the peninsula is Snæfellsjökull, the glacier-capped volcano made famous by Jules Verne's novel Journey to the Center of the Earth. The peninsula is widely regarded as one of Iceland’s most scenic destinations due to the variety of landscapes concentrated in a relatively small area.
The Palisades of Washington state.
When people think of Washington state, most don't picture something like this. The farther east you travel through the state about mid way through the landscape changes dramatically to scenes that are not only full of character and rustic beauty but could possibly hold a paleontologists dream find.
To learn more about this areas history, visit this link.
Oenanthe lugens basalti, Basalt Wheatear, Mourning Wheatear (warriae), Oenanthe (lugens) warriae, סלעית הבזלות, Базальтовая траурная каменка
Basalt Pillows form the front yard of the staunch old lighthouse at Point Perpendicular, at the end of the Beecroft Peninsula.
Basalt, male, black shorthair
Basalt is active and affectionate, and he enjoys belly rubs. He has a little white jewel spot on his neck and curious eyes. Basalt loves ball toys and packing paper. He loves exploring every nook and cranny, so a cat tower or maze boxes would be a great way to keep him busy and happy.