Indoor peak

On our trip to Iceland this January, we got to see a new perspective on a subject we’ve had earlier experiences with — lava tubes.  Formed when lava flows crusted over and subsequently drained, we’ve walked through some in Hawaii — but never previously seen one in a colder clime.

Indoor peak

So this is what happens near the Arctic Circle where there’s a lava tube “skylight” (localized collapse of the tube’s ceiling).   Continue reading