Islandia del Sur

Seljalandsfoss is ~1.5 hours; Vík ~2.5 hours; Jökulsárlón glacier lagoon ~5 hours one-way. Most people take two or three days to do it justice.

Yes — natural blue ice caves under Vatnajökull are accessible on guided tours from November to March. Katla ice cave near Vík runs year-round.

Seljalandsfoss (you can walk behind it), Skógafoss, Gljúfrabúi and Svartifoss in Skaftafell are the headline falls.

It's beautiful but dangerous — sneaker waves have killed visitors. Stay far back from the water, never turn your back on the sea, and heed the warning-light system.

No, the Ring Road and main sights are paved and 2WD-friendly. You only need a 4x4 for F-roads into Þórsmörk or the Highlands.

Yes, on Sólheimajökull and Vatnajökull outlet glaciers — always with a certified guide who provides crampons and ice axes.

Iceland's most famous glacier lagoon, where icebergs calve off Breiðamerkurjökull and drift to the sea. The neighbouring Diamond Beach is where they wash ashore.

Mid-May to early August at Dyrhólaey and the Vík cliffs, where thousands nest each summer.

Vík is the natural midpoint; Höfn is best for the glacier lagoon and Vatnajökull; Selfoss/Hveragerði work as a Golden Circle + South Coast base.

Absolutely — ice caves, fewer crowds and Northern Lights. But daylight is short and storms can close roads, so build in flexibility.