Then there are relatively smaller stones that are better-finished. They are usually found on top of the larger stones.
Based on Rudolf Steiner’s reading of the Akasha Chronicle related in the series of lectures: Cosmic Memory, Prehistory of Earth and Man, the Lemurians had the capacity to harness and transform the magma from volcanic activity to shape it in order to fit their purpose.
For Lemuria was turbulent. After all, the earth at that time did not have its later density. The thin ground was everywhere undermined by volcanic forces which broke forth in smaller or larger streams. Mighty volcanoes existed almost everywhere and developed a continuous destructive activity. Men were accustomed to reckoning with this fiery activity in everything they did. They also used this fire in their labors and contrivances. Their occupations were often such that the fire of nature served as a basis for them in the same way as an artificial fire does in human labor today. p.80
The Lemurians had the capacity to use the volcanic activity as a source of energy.
[…] in man the forces of nature changed into forces of the will. He himself could thereby execute what nature accomplishes. p.73
And Steiner gives us an answer as to how they built such huge edifices with such massive stones. They could harness the fire and magma from the volcanoes to transform nature.
In the earliest times they originated in the desire to give to the things of nature a man-made form. Hills were remodeled in such a way that the form afforded man joy and pleasure. Stones were put together for the same purpose, or in order to be used for certain activities. p.72
And Steiner explains how the pyramid builders raised such huge megaliths.
The goal of the Lemurians was the development of the will, […] he could increase the strength of his arm by a simple effort of the will. For example, he could lift enormous loads merely by using his will. p.71
The description of Rudolf Steiner brings light to what we see on the ground. The much larger stones that are rougher in shape were produced by the Lemurians who had more blurred vision and lived most of the time in a dreamlike state. It was an early period of consciousness.
In Rozovets we find examples of both periods of stone production. The larger lumpier stones are found across the site and form the plinth on top of which stand the Standing Stones that probably date to the later Atlantean epoch.
At the Double Pyramid of Bania the overall structure of the double pyramid probably dates back to the Lemurian epoch.
At the pyramid of Stryama we find larger, lumpier megaliths at the base of the pyramid that have skewer holes and suture marks as if the granite had been molded into shape when it could be worked like puttee.
At the stone circle of Dolni Glavanak the base stones and the overall pyramidal formations date back to the Lemurian epoch whilst the standing stones probably belong to the later Atlantean epoch.