The Access Ramps and the Stabilization of the Bosnian Pyramids

The Bosnian Valley of the Pyramids consists of five structures, where four of them are pyramids. The special thing about these structures is the access ramp to each of the pyramids. Most pyramids around the world do not have an access ramp to to their tops, and are often standing alone without any support. We may say that the access ramp in the Bosnian Valley of the Pyramids is one of the most import features they have, therefore, I am going to explain and discuss them in this article. In addition, I will write about the importance of stability of the different structures.

map-bosnian-pyramids (1)
The Bosnian valley of the pyramids.

The Bosnian Sun pyramid is over 220 meters tall and has an access ramp that is connected with almost the whole structure. By studying the ramp in 3D, we can clearly see how the ramp is shaped. Before the ramp there are some kind of hills, but when the ramp is closer to the pyramid, we can see that it flats out and it goes all the way to the pyramid, with almost the same shape and size. On the sides, we can see that it goes downwards and it creates a very nice ramp.

The Bosnian Sun pyramid and the ramp in 3D.

We already know that the Sun pyramid is matching the cardinal points perfectly and because the access ramp to the pyramid is directly in the middle of the structure, then the ramp is also matching the cardinal points. If this was a natural hill, then the Sun pyramid would not have matched with the cardinal, especially not the access ramp too.

Looking to the western side of the pyramid from the access ramp.
The Sun pyramid and access ramp matching the cardinal points.

There has been some excavations in 2006 on the access ramp to the Sun pyramid. The blocks that can be found are mostly sandstone. Behind those blocks there is clay, marl and a more softer sandstone. There is probably some erosion involved, and this is probably the cause of why there is not so much blocks to be found on the sides of the ramp and we can not exclude the possibility that many of the blocks were taken over the years for people’s own use. It seems like the ramp to the Sun pyramid was built of clay and sandstone, it could have also been a hill previously, but shaped to be an access ramp. In addition, it works like support for the Sun pyramid and gives a stable structure for thousands of years.

The blocks on the access ramp.
Softer sandstone and clay.

Like I wrote before, the Bosnian Sun pyramid is not the only pyramid that has an access ramp. All the pyramid in the valley are having a some kind of ramp. The Moon and Love pyramid has access ramp to the top and a plateau directly on the top of the pyramids. The Dragon pyramid also has a very small plateau, while the access ‘’ramp’’ to the top is by a hill. What is interesting is that the access ramp to the Bosnian Moon pyramid is matching the cardinal points, just like the pyramid itself. I have already discussed the cardinal points in an article and you can read it here: The cardinal points and the mysteries of the Bosnian pyramids 

Samo mali video 110.JPG
The Bosnian Moon pyramid.

As we know, all pyramids in Visoko are having an access ramp, where most of the pyramids are inclined to the access ramp and the ramp is inclined to a hill. There are two very important reasons of why the pyramids are connected with an access ramp. The first reason is the easy access. Instead of climbing the top of the pyramid, you can access it by the ramp. In addition, the access ramp was very important in the building process of the pyramids. It was much easier to place the blocks on top of each other by having a ramp. Some of the pyramids in Egypt was also most likely built with the help of a ramp, so we can clearly see some connections between the building process at the Bosnian pyramids and other pyramids around the world.

An example of the access ramps that could have been used for the building of the Egyptian pyramids.

The second reason is, of course, the structural stability. There is no secret that the region of Bosnia and Herzegovina has had a lot of tectonic activity in the past years. In fact, the Balkan region has the most active tectonics in Europe. It seems like the builders or those that were involved in the Bosnian pyramids knew about the tectonic activity in region and instead of building or shaping the pyramid as they did in Egypt or Mexico, they made an access ramp where the pyramid is inclined and it gives a structural stability. If a large earthquake would occur, the structure would not collapse, because the access ramp is stabilizing the whole structure and they knew how important stable structures are. Therefore the builders created or shaped the pyramids close to some hills or made an artificial access ramp.

The access ramp could have been used for the stabilization of the structure.

The pyramids in Visoko are not the only structures that has an access ramp. Five kilometers from Visoko you can find Vratnica tumulus, where it also has an access ramp. In addition, the tumulus is inclined to this particular ramp likely because of structural stability. Again, it seems like every civilization and culture involved in the Bosnian pyramids knew about the tectonic activity in the region.

Vratnica tumulus from the air.

We can even see this on the different trenches that has been excavated. On the Bosnian Sun pyramid, there are vertical and horizontal blocks, and again, it seems like they knew about the tectonic plates and therefore they placed the blocks differently. Placing the blocks differently would only give strength to the structure. If one row of blocks collapses, then the other row would prevent the other blocks to collapse, and therefore you have a secure structure. This means that the structure could hold for thousands of years.

Vertical blocks on the Bosnian Sun pyramid.
Horizontal blocks on the Bosnian Sun pyramid.

The importance of stable structures is also showing on the other pyramids and the Bosnian Moon pyramid is a good example of that. The materials that the Moon pyramid is built out of is mostly sandstone and clay. It seems like they shaped the sandstone blocks and placed them between clay. Again, it seem like those who shaped or built the Bosnian Moon pyramid knew about the plate tectonics and that those plates could have made many earthquakes, especially in the Balkan region. Therefore they placed clay between the blocks, because it was an excellent stabilization material. When the structure is inclined to a hill and is made of clay, then the structure would hold for a long time.

Sonda 20, Moon pyramid blocks.
Sonda 20, Moon pyramid blocks.

The same thing happens at the Vratnica tumulus. They made blocks which are mostly hard sandstone and again, they placed clay between them. However, the Vratnica tumulus is a bit special, because of the placement of the blocks. Instead of putting them in a normal way like we do today, they cut the blocks in different shapes and placed them. It seems almost like a puzzle, but it was very smart. If an earthquake would occur, then those blocks would lock themselves and with the help of clay, the blocks would not collapse, which is genius.

Vratnica tumulus blocks.
Vratnica tumulus blocks.

The blocks at the Vratnica tumulus are not the only blocks that has been placed like that. A good example is only around 180 kilometers from Visoko, in a place called Daorson. Darosi were an Illyrian tribe which lived there between 350 BCE and 50 BCE. The walls of Daorson are placed on top of a hill and the walls are made in a special way. Instead of placing many of those blocks so that the sides match each other, they are placing the blocks in a way that the sides are in contact with the middle of the block under and over. Not all blocks are like that, but many of them are. The reason why they did this is probably because of the different earthquakes and by placing them in the way they did, the walls would be much more stable, which is very important in a place where it is a lot of tectonic activity. All this seems very logical.

Daorson blocks.
Daorson blocks.

Daorson is not the only one that has these kind of walls. Some of the Machu Picchu walls has almost the exact construction feature, where sides of the blocks are crossing in the middle. Peru is situated along the boundary of two tectonic plates, which are the Nazca Plate and the South American Plate, this means that the earthquakes are frequent. Just as in Daorson, they made these walls, so that the structure would not collapse and hold for many years after the Incas were gone.

Some of the Machu Picchu walls. Picture by Graca Pimentel.

We already know that the access ramp was made for structural stability, but under the access ramp of the Bosnian Sun pyramid we have probably many tunnels. Those tunnels were detected by a satellite tunnel scan and was presented by Klaus Dona. We can clearly see that there are tunnels that are going under the access ramp and into the Bosnian Sun pyramid. In addition, if we are going to follow the map of the tunnels, then there are probably tunnels under the access ramp that is going to the Love pyramid. This probably means that the access ramps are full of tunnels and could also have served as a binder for the tunnels that can be found from Ravne to the Sun pyramid.

Supposed tunnels under the Bosnian Sun pyramid and the access ramp.

We can even connect the Ravne tunnels and the access ramp on the surface. The Ravne tunnels are circa 2,5 kilometers from the Bosnian Sun pyramid. The biggest hypothesis regarding the Sun pyramid and Ravne tunnels is that the conglomerate from Ravne was used for the blocks of the Sun pyramid. So, they digged the tunnels and instead of going a longer way, through where the town of Visoko is today, they went another way towards the access ramp. And really, the way to the access ramp is much shorter and easier than the way through where the town is today.

The entrance to the Ravne tunnels.

I have looked into the two ways to get to the ramp of the Bosnian Sun pyramid. If you are going directly to the ramp today from Ravne it would probably take you circa 58 minutes and the distance is 3,8 kilometers. The other way, through the town of Visoko, takes you circa one hour and 22 minutes and the distance is 5,3 kilometers. This is just tested through Google Maps and it still needs more research. However, we now know that the way from Ravne is much shorter if we you go directly to the ramp, rather than through the town of Visoko. We also need to keep in mind that it would take some time to carry those materials, but it would take a longer time to do that through where the town of Visoko is today. In addition, the Google Maps is showing the easiest way to come there today, plus we have modern day roads. Thousands of years ago the ways to get to the pyramid was different and there was probably many shortcuts, but we now have an idea of which way the ancients could have taken to shape or build a pyramid. Now, the Ravne and Sun pyramid connection hypothesis seems very logical.

Ravne - Sun
The way from Ravne and directly to Sun pyramid’s access ramp. Total lenght is circa 3,6 kilometers.
Ravne - Visoko
The way from Ravne and directly to the Sun pyramid’s acces ramp. Total lenght is circa 5,3 kilometers.

If we are going to follow the original history, then there are many cultural layers at the pyramids in Visoko, stretching from Neolithic times to the Ottoman Empire. There are cultures that have used the different structures for their own good. The access ramp has been used in later stages, and there can be found many different interesting things. In 2013, the volunteers of the foundation Archaeological Park: Bosnian Pyramid of the Sun, opened a experimental test trench on the western side of the pyramid. The trench was 49 meters from Stari Grad (Royal fortress) and it was found some interesting artefacts that appeared to be circa from the 15th century. They found a bronze handle, which was in good condition, and possibly a door lock (Archaeological report from 2013).

Marked trench before the excavations.
The bronze handle.

So, the foundation opened one small trench and already found two remarkable artefacts. I am sure that the whole ramp and pyramid is filled with many different artefacts from different periods in time, it only needs more archaeological excavations. Other artefacts from the surface of the ramp has also been retrieved and many of the blocks has a very nice texture to them and it appears that the material is sandstone. However, these things still needs a lot of excavations in order to conclude anything.

Block from the access ramp of the Sun pyramid.
Blocks from the access ramp of the Sun pyramid.

We have now looked into the access ramps to the Bosnian pyramids and tried to explain its importance to the structural stability and in a case of building a pyramid. In addition, in the case of the structural stability, we have looked into the shapes of the blocks on the different pyramids and what kind of materials the ancients built or shaped the pyramids of. We have also tried to explain why the different shapes to the blocks are important for structural stability and that the ancients knew very well about the tectonic activity in the area and that this could have caused earthquakes. The ramps to the Bosnian pyramids needs more excavations to conclude the different materials that was used and to see if the ramp is a shaped hill or a man made structure with natural materials being used. Like always, more research to this subject is needed.

* * *

My name is Djani Behram. I am a researcher of ancient places around the world, mostly in Bosnia and Herzegovina. I am also the ambassador of the Archaeological Park: Bosnian Pyramid of the Sun Foundation and I have volunteered at the Bosnian pyramids in 2012, 2013, 2014, 2015 and now 2016. I have good experience about the Bosnian pyramids and archaeological sites in the region. In addition, I own one of the biggest sites about the Bosnian pyramids, which is posting news and pictures almost every day. I also own a YouTube site, called TheBIHLover, which is posting a video almost every Wednesday. If you have any questions or feedback, please send it to my email:

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Bosnian pyramids official website:


2 thoughts on “The Access Ramps and the Stabilization of the Bosnian Pyramids”

    1. We can’t excavate on the Sun pyramid because it is protected by the state because of the Royal fortress on top. We can only excavate on the bottom part of the pyramid and private land if they allow us. Plus, archaeology costs a lot of money and the foundation does not have so much money to excavate the whole pyramid.


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