The geothermal power plant at the Blue Lagoon.

Outside the Blue Lagoon, between snow squalls.

Looking over the Blue Lagoon thermal baths. It was below freezing so the fog from the warm water was very heavy.

Bathers at the Blue Lagoon thermal baths. It was below freezing so the fog from the warm water was very heavy.

Moss on volcanic rocks, at the Blue Lagoon thermal baths.

Overlooking the warf at Reykjavik harbor.

Along the road between Keflavik and Reykjavik.

Along a ridge in Þingvellir National Park, with the Þingvallavatn lake in the background.

My friend Ann Redner at in Þingvellir National Park.

Steam vents in the Geysir geothermal area.

The famous viking ship sculpture on the Reykjavik harbor shorefront. It was a gorgeous morning, but it was about 28F with a 25+mph wind - cold!!

Strokkur geyser eruption.

Strokkur geyser, just at the start of the eruption. It is a "pool geyser" and the erruption begins suddenly as a large bubble of gas comes up from the crevase under the geyser pool, pushing it upward. The eruptions happen every 10-12 minutes.

Strokkur geyser eruption.

Overlooking one of the hot springs in the Geysir geothermal area, with Strokkur geyser erupting in the backgroud.

Looking across the almost frozen river at dawn in Selfoss, southern Iceland.

Seljalandsfoss waterfall drops almost 180 feet from the top of a cliff. You can climb stairs up part of the way up and actually walk behind the waterfall - when it's not coated with several inches of ice like it was when we visited in mid-March!

Ice in the runoff of Skógafoss waterfall.

Skógafoss waterfall. The mist from the waterfall has coated the surrounding rocks and canyon wall with frost and ice.

Unnamed waterfall along the southern Ring Road, near the Varmahlið farm. It's a couple of hundred yards off the road, but my sharp-eyed friend Ann (pictured here) spotted it and convinced me to drive down the gravel path to see it - what a great find!

Unnamed waterfall along the southern Ring Road, near the Varmahlið farm. The waterfall is hard to see since it splits coming down the hill side and bounces down in a series of small cascades around rocks, coming back together at the bottom.

Foss á Siðu waterfall along the southern Ring Road. We saw a great many cascades like this coming off the cliffs and forming little streams across the valley.

Cascades along the souther Ring Road east of Vik.

My friend Ann standing on some twisted steel girders that were once part of a long bridge east of Mýrdalsjökull glacier. The bridge was destroyed in the flood caused by a sub-glacial volcanic erruption in the early 1990s. They've made a roadside memorial with some signs talking about the erruption and before and after pictures. The whole area is very flat, looking like it was scoured clean by the rushing water and boulders.