The hidden Mother of Tuyas in Iceland’s remote wastelands
After our respite in northern Iceland, Paul Martin and I found ourselves driving towards the volcanic desert of central Iceland once more. Our rocky target of the day was the “Mother of all tuyas”, Herðubreið. Tuyas are flat-topped, steep-sided volcanoes that formed as a result of sub-glacier eruptions. Referred to as the Queen of Icelandic mountains, Herðubreið is one of the countries most iconic tuyas and a marvel to behold.
To reach our target, we followed roads 1 and F88 into the Icelandic highlands until the turnoff to Herðubreiðartögl. Herðubreið, by far the most visually captivating edifice was in fact one of a series of eruptions in the same area. A shorter, more disproportionate sibling of it was Herðubreiðartögl. Given the relatively flat nature of the surrounding wasteland, the towering series of tuyas were evidently imposing even from afar. The closer we got the more we marveled at the sight and formation of these massive volcanic centers.
Herðubreið and the lava fields
While approaching Herðubreið, the road became quite rough as it crossed a series of old lava flows. The ride was very bumpy and we couldn’t help but joke about the extremely bouncy ride we had a couple of days before when our rear suspensions broke. Just a few moments later there was a noticeably bad bump that felt like the car’s bottom had hit the rocks beneath. I gazed over at Paul and said “That didn’t sound good”. He tried to wave it off with a smirk and an “I don’t know what you’re talking about” line.
We first pulled over to sample Herðubreiðartögl and then proceeded further to stop at Herðubreið. After a short hike up the base of the mountain to collect my sample, it was lunch time. By that time the sun was out and the sky was clear. It was a gorgeous day to be out exploring the natural beauties of Iceland. Paul and I were both very happy with how the day was going. That is until we went back to the car and noticed the back half of the chassis slanted down on the rear tire… The suspension broke again.
Dreki hut and the Icelandic park rangers
With our once more handicapped car we drove to our next destination, camp Dreki. Located at the mouth of the Drekagil gorge in central Iceland, Dreki is a small base camp for the Icelandic national park rangers offering two living huts that can accommodate 50 visitors during the summer. Paul had to notify the rangers of our arrival and intent of work within the park’s limits. He was also hoping to get some advice and perhaps some help with our limping Landcruiser.
One of the rangers had a look at our car and was quick to point out that it would be a bad idea to keep driving the car on the F-roads. Instead of both suspensions giving out on the back, this time only one of them broke. This caused an awkward tilt side tilt of the chassis and was putting a lot of strain on the back axel. If we forced it too much on the mountain roads it could completely break the axel. Considering we still had several targets planned in central Iceland for the next two days this was pretty bad news.
We asked if there was any other vehicles available at the camp that we could potentially borrow. Or if the rangers had any other suggestions. This one ranger, Hannes, tentatively mentioned that he might be able to gives us a ride to our locations. I could see Paul’s face lighting up immediately. Hope was back! But our ranger friend couldn’t promise us anything yet and had to get back to work. He left us there to settle in for the evening and would be back later with an answer.
After settling in, we had dinner and tried to salvage whatever was left of our scratched up “Viking” beer cans. The recovery was about 80-90% which wasn’t too bad considering the cans were bouncing all around in the back of the car together with rocks and tools for hours. Later in the evening we met up once more with Hannes and he finally agreed to drive us around for the next two days.
The desolate land of ash and rock
The next morning we got into the truck with Hannes and bolted across the grey landscape of central Iceland. The man clearly knew these roads like the back of his hand. The car was literally flying on the F-roads. We were reaching our targets in little to no time.
We were once more on the infamous Gæsavatnaleið that had wrecked our car during our first day in the field. We had a short stop at Gigöldur, where we sampled an old fissure eruption as well as a few other hyaloclastite outcrops around the mountain.
Without wasting any time we were back in the car and flying towards Urðarháls. Urðarháls was a massive crater located fairly close to where we had stopped the first day when going to Kistufell. With its steeply inclined walls, Urðarháls is about 0.1 km deep, 1.1 km long and 0.8 km wide. The bottom of the crater seemed impossible to access and the thought of falling into it with no chance to escape gave us pause. Luckily, for our work it was enough to simply hammer out a piece of rock from the top.
With our tasks for the day completed in record time, we drove back to Dreki for a relaxing afternoon.
The Dyngjufjöll mountains
Upon our return to camp, Paul decided to catch up on some reading/work and I got the afternoon off. I decided to take advantage of the free time and go hiking up the Dyngjufjöll mountains near Dreki.
At first I was just aimlessly walking up the first slope taking the path of least resistance. After crossing a narrow valley, I reached a plateau just above the camp offering a spectacular view towards the east. The whole area was covered in a variety of volcanic sediments. The most intriguing being a centimetric layer of light beige pumice.
Apart from the eerie blanket of fine pumice, several large fragments are scattered about across the landscape. The pumice which blanketed a large area in all directions was formed as a result of the Askja eruption of 1875, one of the most catastrophic volcanic events in Icelandic history.
The highly explosive eruption of Askja in 1875 killed much of Icelands livestock and local vegetation. So much so that it led to a famine crisis. As a result much of the population emigrated to other parts of the world, especially North America. Ash and pumice from the eruption was carried across the North Atlantic, with reports of fallout as far as Norway and Poland.
Upon exploring the plateau further I discovered a hiking trail with a sign reading 8 km to Askja. I was immediately hyped to go see the famous caldera for myself! However, 8 km one way was quite a lot considering it was already around 3 pm. With a reluctant sigh, I decided to play it safe and not venture into the unknown alone without notice for several hours.
A storm front was also visibly closing in, so staying back was the right call. There could always be a next time anyway. As the rain rolled in, I decided to go back and further explore the narrow valley I had climbed up on. This lead me to a hidden little gem of a waterfall called Drekagil.
I spent another hour or so roaming around the mountains without venturing too far from Dreki.
Saving a day
The following day we had just two more targets to reach. A small distant volcanic cone called Lindakeilir and a quick sampling stop along the way at Upptyppingar.
The first stop went without a hitch. We reached our hyaloclastite target, grabbed a quick sample and blasted off. The second one though ended up being quite the disappointment.
In the geological literature and maps, the little volcanic cone at Lindakeilir was labeled as hyaloclastite, our sought-after, brown rock types. However, when we got there there was no brown rocks in sight. The entire cone was made up of sub-areal black basalts. Not at all the sub-glacier volcanic rocks we desired.
Nonetheless, we reluctantly grabbed a sample and vowed to forever mention this felonious error that made us drive all the way out there for no reason. However, with Hannes at the wheel we wasted little time and ended up saving a day of work.
Since we had finished our objectives in the area, Paul decided to cancel the last night at Dreki and hit the road the same day. A last minute Airbnb booking and a quick phone call to the car rental agency later, we bounced along with dodgy suspensions towards East Iceland.