Hljóðaklettar Circle Trail

Overview

A compact but characterful loop, the Hljóðaklettar Circle Trail winds through “Echo Rocks” — a maze of volcanic plugs carved by the Jökulsá á Fjöllum river. Officially about 3 km (roughly 1.9 miles) total, this is a signed loop that most hikers complete in 1–1.5 hours. The park labels it challenging, and that’s fair: the footing turns rocky and uneven, and the “back side” includes short scrambly sections.

What You’ll See

This is a geology-forward hike. Expect basalt columns in unusual orientations (some strikingly horizontal), honeycomb-weathered walls, caves, and arched recesses. Close to the river, the acoustics get fun — cliffs bounce and amplify the roar, giving Hljóðaklettar its name. Highlights include Tröllið (“the Troll”), a crowd-pleasing formation reached early on; Kirkjan (“the Church”), a dramatic cave-like arch you can step into; and views toward Kastili (“the Castle”) across the river. Keep an eye out for rounded lava textures sometimes nicknamed “lava roses.”

Trail Experience

The first leg toward Tröllið is straightforward. As you commit to the full circle, the terrain grows rockier, with patches that feel “tricky in a couple spots.” Nothing technical, but expect hands for balance here and there. The route is marked and generally well-defined; still, stay attentive to signage and any posted closures. Wind can be fierce on open viewpoints along the canyon rim.

Easier Option (V2)

If the loop’s rougher section isn’t for you, the park’s easier spur to Tröllið (V2) offers a great sampler: about 1–1.2 km round trip and ~30 minutes. You’ll still get echo acoustics and signature formations without the scrambles.

Tips and Tricks

• Footwear matters: sturdy hiking shoes make the rocky sections much more comfortable.
• Layers are smart; strong winds are common near exposed overlooks.
• Bugs can show up in season — pack repellent.
• There’s an easy-to-access car park right at the start. The descent road into Vesturdalur is steep; drive cautiously.
• Visiting is free, and no permit is mentioned for this loop. Pet policy isn’t specified; check park rules before bringing a dog.

Alternatives and Add-Ons

For a longer challenge and canyon panoramas, consider Rauðhólar (V4), a ~5 km, 1.5–2 hour route with big views over Hljóðaklettar and the river. Nearby, the Langavatnshöfði viewpoint offers a dramatic perspective with a short walk from its parking area.

Best Time to Hike

There’s no single “best season” called out, though many trip reports land in summer (June–August). Regardless of timing, expect wind on exposed sections. Pick calmer weather if you can, and start earlier in the day to give yourself unhurried time for photos inside the caves and around the echo spots.