Dettifoss

• West bank (Route 862): Paved road, large parking, and toilets. From the lot, it’s roughly a 10–15 minute, mostly straightforward walk on marked paths to multiple viewpoints and decks. Expect more people here but easier logistics.
• East bank (Route 864): Gravel, rougher, and commonly closed in winter/spring thaws. Fewer crowds and a closer, wilder feel to the falls. Note there’s no bridge near the waterfall; switching sides is a ~60 km drive.

From either side, you can tack on a short riverside walk upstream to Selfoss (about 400 m from the junction on signed trails). Downstream, Hafragilsfoss is another big, moody cascade with separate viewpoints. Plan 1–2 hours for Dettifoss alone, or 3–4 hours if you add Selfoss and Hafragilsfoss.

Spray is a constant—sometimes visible from far off—so bring waterproof layers and protect your camera. Paths near the rim can be wet and slick, and winds are often strong. The canyon’s black basalt and the river’s milky color are a great visual combo for photos.

There’s no entrance fee. West-side facilities include parking and toilets, and in season a small food stand sometimes appears by the lot. Stay on signed paths, keep well back from slick edges, and don’t approach the river—currents are lethal. Authorities may temporarily close paths or roads after landslides or during freeze-thaw; check conditions before you go.