Of course in a land built by volcanoes, and aside from our time atop a glacier / volcano, we did visit quite a few other volcano-related places. Iceland is completely alive, being both torn apart and rebuilt at the same time.
We did hikes to 2 “explosive craters” – (“An explosion crater is a characteristically shaped hole formed when material is ejected from the surface of the ground by an explosive event just above, at, or below the surface. A crater is formed by an explosive event through the displacement and ejection of material from the ground. It is typically bowl-shaped.”)
The first in Kerid (outside Selfoss) . this place was difficult to find, until we finally figured out the symbol for “interesting place” on the roads (like 4 days into the trip – so much for research) . and easy hike and a nice view
The second was the Eldborg crater on Snæfellsnes . this was a 6 KM round trip hike thru mud and scrubs, but a nice payoff nonetheless. I had some trouble remembering the name, as you can see:
We also enjoyed the black beaches of Vik, on an especially sunny day…. And the cloudier day at Budir
We watched the Geysir’s perform…. Although my patience was not what it needed to be.
And finally, the Iceberg lagoon at Jökulsárlón. We took the boat ride and tasted the ice. (“literally "glacial river lagoon" – is a large glacial lagoon in southeast Iceland, on the borders of Vatnajökull National Park. Situated at the head of Breiðamerkurjökull, it evolved into a lagoon after the glacier started receding from the edge of the Atlantic Ocean. The lake has grown since then at varying rates because of melting of the Icelandic glaciers. The lagoon now stands 1.5 kilometres (0.93 mi) away from the ocean’s edge and covers an area of about 18 km (6.9 sq mi). It recently became the deepest lake in Iceland at over 248 metres (814 ft) depth as glacial retreat extended its boundaries. The size of the lagoon has increased fourfold since the 1970s. It is considered as one of the natural wonders of Iceland.”)