9. Kerid Crater Iceland - aquamarine crater lake
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Kerið Crater | Iceland Travel Guide

Kerið Crater was one of the attractions that kept appearing in Icelandic itineraries prior to my visit to Iceland. Being a first-time visitor, I naturally put it on my to-do list but because of a lack of time, we initially decided on skipping Kerið Crater on our way towards Hotel Selfoss. 

However, as luck would have it, we saw a small sign saying that Kerið Crater was located right along the road that we were using! Hence why we decided to make a really quick pit stop at Kerið Crater.

TL;DR

If you have no time or don’t want to pay (there is a nominal fee of ISK 400 ($3) involved), skip this.

All you get is a vivid red/green crater & aquamarine crater lake, which is a view you can after a 10-second walk from the main entrance. Nothing worth shouting about beyond that.

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Kerið Crater is located in the Grímsnes area of South Iceland and is part of Iceland’s Western Volcanic Zone, which runs through the Reykjanes peninsula and the mighty Langjökull glacier. It is in the northern end of a row of volcanic hills known as Tjarnarhólar. 

Kerið Crater formed around 6,500 years ago (according to the pamphlet given at the Kerið ticket office). It is oval and measures:

  • 55m deep;
  • 270m in circumference; and
  • 170m in width. 

With the crater lake itself being around 7 – 14 m, the waters are a striking aquamarine due to its minerals and entirely real. The waters are believed to be groundwater and not rainwater. 

According to an old tradition, the rising water level is followed by a corresponding fall in the pond on Mountain Búrfell in Grímsnes. Traces of volcanism are not very obvious, according to the leaflet given, since most of the eruption sites are low-lying and many of the craters are hidden by vegetation. The three craters in Grímsnes that are clearly discernible and well-known features: Kerið, Seyðishólar and Kerhóll.

The caldera, which is the outside of the crater surrounding the crater lake, is what draws the eye. They are a vivid red (volcanic rock), with spots of lush vegetation growing around it in the summer. In the winter, the lake is frozen over and the caldera is covered in snow.  

Entrance Fee

The land around the Kerið Crater is private. 

While parking beside Kerið Crater is free, you will need to pay an entrance fee of ISK 400 (approximately USD 3) to gain entry to the crater. You can pay with your credit card.

Upon payment, you also get a small leaflet that tells you about the formation of the Kerið Crater. The pamphlet is in Icelandic, English and German. 

Experiencing Kerið Crater

3. Ring Road Iceland to Kerid Crater

This was the view on the Ring Road as we journeyed towards Kerið Crater. 

4. Kerid Crater information sign

Upon turning in, we saw a large information sign talking about Kerið Crater, with the car park located towards the right of the sign. The entrance to the crater was to its left. 

5. Kerid Crater entrance fee ticket booth

But before viewing Kerið Crater, you have to go past the wooden hut where you pay for your ISK 400 entrance fee. This payment can be done via credit card. 

6. Kerid Crater warning sign

After paying, I walked up the gentle slope and saw the above sign:

  • Children 12 years and younger can visit Kerið Crater for free
  • No swimming is allowed
  • Visitors are warned to visit at your own risk and to not walk on ice
7. Kerid Crater - left

After ascending the very short slope (it took less than 5 seconds), you will see a clear reddish path that leads around the circumference of Kerið Crater to your left. 

8. Kerid Crater - right side

I took a right, which had the above path. 

Because I was running short on time, I walked to the edge of the path and immediately saw the famous aquamarine lake of Kerið Crater.

9. Kerid Crater Iceland - aquamarine crater lake

I spent 5 minutes taking pictures from this angle before leaving. 

Hiking at the Kerid Crater

If I could return, I would set aside some time to hike the trails at Kerið Crater. 

It is quite steep, but there is a clear path to follow. As the earlier warning sign stated, be careful of the slippery paths!

The trails go around the circumference of Kerið Crater and also go all the way down to where the lake resides.

FAQs

How do you pronounce “Kerið”?

Kerið is pronounced as key-eh-reh. To hear a pronunciation, visit Forvo

How was Kerið Crater formed?

1. Kerid Crater Iceland

Kerið Crater has been classified as an explosion crater, which is formed in explosive eruptions. 

However, Kerið is an unusual crater lake because its caldera (i.e. large volcanic crater) wasn’t formed from a volcanic explosion. Instead, it is believed to have formed when a cone volcano erupt. This resulted in the depletion of the magma in its centre depleted and consequently, the weight of the collapsed into the empty chamber leading to the formation of the lake. 

The volcanic crater is now filled with water. The steep slopes surrounding Kerið look like a natural amphitheatre, and concerts have been held on the volcanic lake using a floating raft (i.e. by Bjork, no less!)! 

Why is the water level at Kerið Crater special?

The water level in the crater lake provides an insight into the groundwater. 

Beneath a certain level, the rock cavities and fissures are filled with groundwater. The surface of the groundwater is known as the water table. 

Kerið’s water doesn’t drain out. Instead, it rises and falls based on the changes in the water table. This explains why the depth of the lake ranges from 7 – 14 m deep depending on the time of the year and the amount of rainfall received in the area. 

How much time do you need at Kerio Iceland?

I spent 5 minutes at Kerið Crater because we were running short of time. Kerið Crater was an unintended landmark on our self-guided Golden Circle tour.

The distance between the parking lot and the crater is less than a minute’s walk. If you want to say that you’ve been to the Kerið Crater and don’t need to hike all the way down to the lake itself, then 5 minutes is doable. 

From how I see it, you can easily spend up to 1 – 2 hours just walking around the rim of the Kerið Crater taking photos. Before then hiking down towards the lake for more photos. 

Can you swim in Kerid Crater?

Iceland’s rules state that you can swim in an area that does not explicitly forbid the activity. 

In this case, there was a sign at the front of Kerið Crater that explicitly forbids swimming. So no, you can’t swim in the crater lake!

Are there fish in Kerið Crater?

Yes, there are some tiny, silver-coloured fish in the lake of Kerið Crater.

Can you visit Kerid Crater in winter?

Yes, you can. Kerid Crater will be a different experience in the winter since the lake will have turned to ice, with its reddish slopes coated in snow. You might want to wear crampons to avoid the possibility of tumbling down the sheer edges of the crater. There are no barriers holding you back. 

In November, you can start to catch little patches of snow around Kerid Crater.

How far is Kerid Crater from Reykjavik & other landmarks?

Kerid Crater is very easy to find. You will see a small road sign alerting you to the crater. From there, just make a small turn to enter the car park. 

When departing from Reykjavik, you will drive along the Ring Road (Road 1) for around 47.5km (35 minutes) before taking a left onto Road 35. Just before reaching Selfoss, you will see another turn to make. Thereafter, drive for around 10 minutes to reach the Kerid crater parking lot. 

How far is Kerid Crater from other famous Icelandic landmarks?

In terms of distance, Kerid Crater is located:

What are the restaurants near Kerid Crater?

If you are hungry, these are the following food options near Kerid Crater:

  • Restaurant Þrastarlundur is 5 minutes away; 
  • Restaurant Minniborgir is 7 minutes away (it also has 7 30m2 houses for rent, which have 3 shared hot tubs); and
  • Kaffi Krús is 12 minutes (15km) away, which has everything from nachos & tomato bruschetta to pizza and Cajun burger.

Would you recommend visiting Kerið Crater?

I wouldn’t make Kerið Crater a priority. If you are really short on time, I would skip it. The only thing you will be getting is the view of the crater lake and the unique red volcanic slopes. It is more like a bucket list item. 

That said, I am glad to have visited Kerið Crater because I love bucket list destinations. To be able to say that I’ve been there and seen it with my own eyes. 🙂

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