While wandering around Kilauea Caldera some years ago, looking at old
ash fall layers and faults, I noticed something interesting;
rocks, often with a rock and/or a plant in the center.
After seeing enough of them, it seemed like these were caused by ejecta
from the 1924 Kilauea explosive eruption
(check it out!)
It would be cool to do a "trench" across the middle of one of these,
but I don't think the park is going to allow it.
For the technically minded / nit-pickers, these are "impact pits" rather than "impact
At the moment, you can't drive to the parking area closest to this
High SO2 emissions from Halemaumau have caused the closure of Crater Rim Drive
from the Chain of Craters Road turnoff to the Jagger Museum.
Location of "craters" -
1924 Halemaumau eruption into 1790 (and older) ash
From Google Earth
Impact sag crater, rock flew (possibly from Keanakakoi)
and fell into older ash (1790 and older) - road cut
Closeup of rock and sag pit
(What Barringer expected! an offset meteorite)
Plant in the middle
Rock and plant
Robert Strong next to a "crater"
After the 19 March 2008 Halema'uma'u Eruption, HVO posted the following images on their pages - showing the results of impact
Looks like a ~25cm rock with a ~80cm "crater"
There appear to be 3 "impacts" - one with its rock missing (collected?)