Vatnajokull Deep Dive
Vatnajokull covers about 7 700 km2 — roughly 8% of Iceland's land area — and is Europe's largest ice cap by volume. It sits on top of several active volcanoes, including Grimsvotn and Bardarbunga, which gives it some of the most explosive glacier-volcano interactions on Earth.
Geography
The ice cap rises to 2 110 m at its summit (Bardarbunga). It feeds more than 30 named outlet glaciers in three main directions — south to the Atlantic, north to the central plateau, and east toward the Eastfjords. Many southern outlets reach within 100 m of the Ring Road.
Volcanoes beneath
Grimsvotn, the most active volcano in Iceland, lies beneath the ice cap. Eruptions periodically melt vast subglacial lakes that drain in catastrophic "jokulhlaup" floods, most famously the 1996 Skeidararsandur flood after the Gjalp eruption.
Major outlets
- Skaftafellsjokull and Svinafellsjokull. Reached from Skaftafell visitor centre — the main southern hub.
- Falljokull. A steep, crevassed outlet above Skaftafell with popular winter ice caves.
- Breidamerkurjokull. Feeds Jokulsarlon lagoon.
- Fjallsarlon outlet. Smaller calving lagoon west of Jokulsarlon.
- Hoffellsjokull. Eastern outlet near Hofn.
Multi-day trip planning
A 4-5 day Vatnajokull-focused trip uses Vik or Hofn as logistic bases and packages:
- Day 1: Solheimajokull walk on the south coast.
- Day 2: Skaftafell, Svinafellsjokull walk.
- Day 3: Jokulsarlon and Diamond Beach.
- Day 4: Winter blue-ice cave (November-March) or summer kayak.
- Day 5: Hoffellsjokull or research-station tour at Skaftafell.
When to go
Skaftafell visitor centre is open year-round. Ice cave operations run November to March; the Vatnajokull National Park ranger programmes run June to early September. Ring Road conditions can vary; check before driving in winter.
Explore on the map
Filter to "Vatnajokull" on the interactive map for every named outlet, the Skaftafell trails, and the year-round and seasonal access points.