Pakasaivo seen from the north end of the lake, west shore.
Pakasaivo looking left from south Pakasaivo looking straight from south Pakasaivo looking right from south
On the opposite side is the popular tourist spot.(In the middle).
Viewing from:

Depth of this circular basin is approximately 60 meters (measured with acoustic depth sounder by Peter Johansson)

The depth of Pakasaivo is approximately 60 meters. It has never been thoroughly studied. So far, publications of Peter Johansson are the only papers published about Pakasaivo and its characteristics. The papers focus mostly on explaining the possible ways of the formation to explain this anomalia. Concrete material (samples, measurements, photographs, videos, etc.) taken from the area are scarce. Rumours have been spreading about diving attempts, but none of these have ever been made public. This is understandable since it would require written permission.

Diving is made hard, if not impossible, by the fact that approximately in the depth of five to ten meters, the sulfur content of the water highly increases. This is caused by meromictia, a state in a lake where the usual mixing of water layers is missing. It produces oxygen-free, highly sulfurous environment, which prevents the material sunken to the lake from decaying. It is likely that divers will get strong allergic reactions from the sulfur. Depth in itself is not a problem for experienced divers since scuba divers often dive much deeper.

The steep walls surrounding Pakasaivo are dangerous, mostly consisting of fragile rocks, which crumble underfoot. The possibility of accidents is obvious, and great care must be taken when moving around Pakasaivo. I fell once, but by God's grace, I was uninjured. Please be very careful when walking in the vicinity of Pakasaivo, some rocks and formations are more fragile than what they seem

One of the most obvious dangers in Pakasaivo vicinity is that, since it is protected wilderness, is the absence of arborists. Trees fall whereever they happen to fall. They are not marked and cut in advance to protect people. Whoever entes Pakasaivo vicinity, must look for oneself. Take a look at these images:

A tree cut in half, not by man, but by natural forces

A tree has fallen to path

A tree about to fall

This tree is not very firmly on the ground

So be careful and remember that you move in Pakasaivo vicinity at your own risk. In bad weather it is better not to move at all, if not necessary.

Also obvious is that the talus cones in the Pakasaivo vicinity are very hard to walk on since the rocks move under the walkers feet. In these areas, the only way to move safely is slowly and step-by-step.

Talus cones are dangerous places, and one has to watch every single step

Rocks slip under one's feet

It takes a long time to advance in these rocky fields.

Pakasaivo area has a very high population of vipers. They can sojourn anywhere and look like wooden sticks when they don't move. Always carry a snake-bite-kit with you, though most sources now claim they could worsen the situation and should not be used at all. The cellphone network is weak in Pakasaivo vicinity, but there are hot spots (or at least one bar spots) here and there, and a call to 112 should be immediately made.

The presence of snakes is understandable since Pakasaivo vicinity is has a high frog population. When walking the paths that surround Pakasaivo, one can constantly hear frogs jumping in the green thickets. It is a warm and moist environment (in the summer). Reindeers often walk from the southern end through the northern end so encounters with them can be expected. In winter time Pakasaivo is not accessible with a car, a snowmobile must be used instead. The more sporty option is skiing.

I believe these are what the snakes are after.

Many see Pakasaivo as a scary, hideous place, but I beg to differ. I think its one of the most beautiful God's creations in Finland. The walls, rising to altitude of 30-40 meters above the lake surface, are radiating the peace and majestity of almighty God. Waking up to the gurgle of the two streams that run into the lake is a wonderful experience that cannot be experienced anywhere else. The surface of the lake works like a mirror, both in a figurative and a concretic sense. It's almost like a mirror to one's soul, and since the rock walls are protecting the lake from winds on all sides, the still, clear surface of the lake mirrors the sky over it perfectly.

I admit that the stories told can have an effect how man interprets what he sees. When I saw this on the morning, I stopped for a moment:

A stoned reindeer?

There is a strong expression in the vicinity of Pakasaivo that "you are being watched." So the legends told do have an impact.

Pakasaivo vicinity used to have a hut and a souvenir shop of some sort, but these were dismantled in 2016. There still is a designated fire making place, a firewood shed, and an outhouse. There used to be multiple wooden walking platforms surrounding Pakasaivo in south and in the east, but now the walking platform in the east has been dismantled due to poor condition, and only the walking platform of the south remains. I do not much wonder that the walking platforms are being neglected and dismantled when time renders them unusable, they offer a very limited view to Pakasaivo and for many, it is not satisfactory.

The essence of the local soil is that it cracks and moves towards the lake. The person moving in Pakasaivo vicinity is being pulled towards the deep core, from which there is no return. It's understandable that walking platforms have been installed, but it's equally understandable that people choose their own paths to satisfy their curiosity. Just by walking there, the stony structures fall apart. Boots with adequate protection are strongly recommended.

The stone walls crumble by themselves.

It looks like it's about to collapse at any moment.

From farther away, it looks even more worrying.

Risks are obvious, and there are plenty of them, but they are worth taking.

Rocks fall continuously in the turmoil of natural forces revealing their inner structure

There's a cave in Pakasaivo, which I have read of from multiple sources and tried to find many times when visiting Pakasaivo, to no avail. It seemed there wasn't even a hint of cave anywhere in the area. One summer I finally understood I had been looking directly into it all those years. The location of the cave has been reported to be difficult and some claim "it's only accessible by boat". I think that was one of the primary reasons why I had been skipping the most obvious position of the cave all the time I had spent looking for it. A proverb says if you want to hide something very cleverly, you should hide it right under seeker's feet. That proverb describes perfectly my relationship with the cave in Pakasaivo. I had scanned the circular basin with binoculars from all angles I could think of and checked every shaded, dark spot in the terrain that somehow resembled a cavity of some sort, just to find out when I went to these spots that they were plays of light and shadows. I reasoned that if there's a cave it's entrance shows as a dark spot from the distance. Although it's not necessarily so (if the sun is shining directly into the cave and I am watching the cave from the direction where the light is coming from, I guess it's not a black hole then), this presupposition proved to be correct. The biggest problem in finding it was that I assumed that if it's difficult to access, it must be as far away from the tourist spot as possible. It turned out to be the opposite way. It was right under the tourist spot.

The cave's entrance is right under the busiest tourist spot

It's true getting there is tricky and dangerous, but I don't quite understand the claim of this cave being accessible only by boat. One simply has to carefully move sideways towards the cave. In my opinion, it doesn't get that much safer by boat, since one still must climb and take all the same risks.

There it is, those trees that have fallen out of the way helped in finding it.

I incorrectly assumed that the cave would be at the waterline, since it was claimed to be only accessible by boat. It's not and one has to climb boat or no boat.

It's not much of a cave, but it does give shelter from the weather.

Let's take a look at it from another angle. This is everything there is in it. It doesn't go any deeper.

I didn't feel very safe inside this "cave". Here are a few pics from the inside.

Inside the cave.

Those pics revealed why I didn't feel safe. It seems to be a very fragile structure, ready to collapse at any moment.

Those hollows might seem like they are leading to somewhere, but they don't. I checked them.

The rock common here is flaked monzonite rock. It breaks easily.

This is Chrysothrix chlorina, a yellow lichen that likes shady places. There's a lot of this in the vicinity of Pakasaivo. It's so bright it cannot be missed.

This moss I have seen abundantly present in the vicinity of Pakasaivo, but I have not been able to identify it. If you can, please contact me!

Let's peek outside the cave. These are the rock walls surrounding it.

Here one can see the mechanism behind the biomass presumably covering the bottom of the lake. Everything here goes down and that tree is just about to.

It just doesn't look very safe.

Here the inner structure of the rock walls surrounding Pakasaivo circular basin can be seen.

The Red arrow indicates the location of the cave.

Near the cave, a beautiful scenery opens.

Another tree going down. This is what happens to trees growing in Pakasaivo.