Thursday, May 25, 2017
Here's a Hawaiian Mystery for You: Where Did These Circles Come From?
A couple of other background information items: Kilauea is a broad shield volcano composed of thousands of basalt lava flows. It is highly active, and indeed there has been a non-stop eruption going on one place or another on Kilauea since the early 1980s, the longest sustained eruption in recorded history. The lava lake in Halemaumau has been active since 2008. One further point to consider...should we be seeing gravel here, so close to the summit of Kilauea?
So there you go: don't be afraid to speculate! Give us some ideas in the comments section...