Dimmuborgir: curated, but still worth seeing
The marked trail network felt more maintained and curated than our favorite wild Iceland hikes, but the lava formations are genuinely unusual. This is an easy place to customize: walk for 20 minutes or stay longer.
Hverfjall: short, steep and worth climbing
The crater looks imposing, but the climb took us only about 10–15 minutes. The payoff is looking directly into the enormous dark crater and out across the surrounding volcanic landscape. You can also connect Hverfjall and Dimmuborgir on foot.
Grjótagjá: a very quick cave stop
The small lava cave is interesting on its own, and the Game of Thrones filming connection makes it more fun if you are a fan. It is a natural add-on because it is so close to the other Mývatn stops.
Hverir / Námafjall: definitely stop
Smoking fumaroles, boiling mud and mineral-colored ground made this feel like Iceland's version of Yellowstone or Lassen. Stay on the marked paths around the active geothermal ground.
