The ice left these chunks of lava rock behind, but its cycles of freeze-up and thaw continued to break them down, in an unbroken chain of summers and winters going back directly to the first iceless day. Rainbow Volcano.
The ice left these chunks of lava rock behind, but its cycles of freeze-up and thaw continued to break them down, in an unbroken chain of summers and winters going back directly to the first iceless day. Rainbow Volcano.