Kerið Crater Guide

Last updated: 2026-09-08 · TATS Man

Is Kerið worth adding to the Golden Circle?

Usually, yes — if the route already takes you through the area. Kerið sits on Road 35 in South Iceland and works as a compact volcanic stop alongside the wider Golden Circle. I would not cross half the country for it, but I would happily add it to a day that already includes Selfoss, Geysir, Gullfoss or Þingvellir.

The official Visit South Iceland description gives the key scale: Kerið is about 55 metres deep, roughly 3,000 years old, and belongs to the Tjarnarhólar group of volcanic hills. Water now fills the crater floor, creating the lake that gives the site its strong red-rock-and-blue-water contrast in good conditions.

What Kerið actually is

Kerið is often called a volcanic crater, but the useful thing to understand is its shape: a broad oval depression with steep inner slopes and a lake at the bottom. The colourful scoria and sparse vegetation make it visually different from Iceland's darker lava fields.

I would not overcomplicate the geology while standing in the wind. Walk the rim, look across the layered slopes, then descend if the path and conditions are comfortable. Seeing the same crater from above and below is what makes a short stop feel complete.

How long I would allow

For a simple rim look, Kerið can be a short stop. For the full experience — parking, walking a useful portion of the rim, descending toward the lake and taking photographs without jogging — I would allow roughly 45–60 minutes.

That is my planning allowance, not an official minimum. If the weather is poor, the path is icy or someone in the group moves slowly, the sensible visit is whatever conditions allow.

Walk the rim first

The crater rim gives the best sense of Kerið's shape. I would start there before descending because it immediately answers whether the lower walk is worth doing for the conditions that day.

Wind exposure matters. Iceland can produce strong gusts on an otherwise ordinary-looking day, and parts of the rim are naturally exposed. I keep a sensible distance from the edge, especially when distracted by a phone or camera.

The rim also gives the better wide-angle perspective if the lake colour is muted, frozen or reflecting grey cloud rather than the bright blue seen in promotional photos.

Then descend toward the lake if conditions suit

A path leads down inside the crater toward the lake. It changes the scale completely: the walls feel larger and the bowl shape becomes more obvious.

I would skip the descent if ice, mud or strong wind makes it awkward. In winter, I do not treat a frozen-looking lake as an invitation to walk onto it. Conditions on natural ice are not something a travel guide can certify from a desk.

Admission and opening details: check the current operator information

Kerið is one of the Golden Circle-area natural sights where visitors may encounter a site admission charge rather than the completely free access assumed in older Iceland itineraries. Fees and operating arrangements can change, so I would check the current site/operator information on the day rather than hard-code an old króna amount into the budget.

This is also why I avoid telling people that a natural attraction must be "open 24 hours" simply because there is no museum door. Parking, access management and winter conditions are separate questions.

Best light and best season? I care more about conditions

Kerið can look striking in summer colour, autumn tones, snow or winter ice. I would not build the entire Golden Circle schedule around a theoretical perfect hour of light.

The practical variables are road conditions, wind, precipitation and how much daylight the rest of the route needs. In winter, the crater can be beautiful but paths may be snowy or icy. In summer, it is easier to include without sacrificing daylight elsewhere.

How to combine Kerið without creating a silly route

Kerið sits in the Golden Circle area, but it is not one of the classic three headline stops of Þingvellir, Geysir and Gullfoss. That is useful: it can slot into a route rather than dictate one.

A common shape is to use Kerið between the geothermal/Golden Circle sights and the Selfoss side of the route. If I am also driving the South Coast, I pay attention to total hours; adding "just one more stop" five times is how a relaxed Iceland day becomes a 12-hour windscreen marathon.

For the main loop, use my Golden Circle guide. If the weather begins to deteriorate, I would protect the major road legs first and drop minor stops before I start racing daylight.

Accessibility and family reality

The easy upper viewpoint makes Kerið more approachable than a long hiking attraction, but the full rim and descent involve uneven outdoor paths. I would not promise step-free access to every viewpoint without checking current site information.

With children, the attraction is refreshingly simple: volcano, giant hole, lake. The challenge is edge awareness. I keep younger travellers close on the rim rather than relying on the landscape to provide a barrier everywhere.

My verdict

Kerið is a good 45–60 minute add-on, not a half-day destination. Its value comes from being different from the waterfalls and geothermal fields around it. Walk the rim, descend if conditions are good, understand that the lake colour changes with weather and season, then move on before a short volcanic stop swallows the entire itinerary.

Cheers, Carpe Diem & keeping the crater stop short but volcanic! 🍻⏳🌋
TATS Man
your rim-walking detour accountant