Runequest is supposedly a Bronze Age-style setting. Of course, in fact it is a very much modern, or rathern postmodern, and "Bronze Age" parts are mostly from Eliade etc. (This is not a criticism, by the way).
The Bronze Age was an era of the Artificial Immortality. People thought one part of the soul lived IN the corpse, which was only "partially" dead, and another lived on in the Underworld, or Blessed Isles. The corpse had to be fed, not always symbolically (That belief lasted longer, even until Classical Greece: they had feeding pipes to literally feed corpses with soup). As long as the corpse lasted underground, the main soul could survive in happines, using all the treasure gathered in its tomb. But it had to have that treasure, and regular sacrifices to feed it. The state was basically an association to worship the ancestors.
As the Egypt was the most stable state in Europe, this system survived the longest there, but originally it was not limited to Egypt. In China, ancestor worship was finally eliminated only by the Communists.
According to this belief, the divine power comes to the ruler through his ancestors. His main duty is to sustain his dead ancestors in their "pseudo-life" by building and guarding their tombs, giving them proper grave goods, "feeding" them with sacrifices, and sacrificing to gods on their behalf. On a smaller scale, this was done by all people; even if the sacrfices had to be mostly symbolic.
By connecting themselves with the divine realm and becoming guarantors of good weather, fertility of the earth etc, the early kings could justify their own power.
The whole state was based on the religiously justified taxation by the king. Scibes served mostly to write down the taxes. The state gathered food, gold, everything.
At that time there were gathered enormous treasures in many tombs - in Mycean Greece, in Egypt, for example in the enormous, now-destroyed Egyptian Labyrinth etc.
http://en.wikipedia.org/wiki/Labyrinth#Herodotus.27_Egyptian_labyrinth
http://www.sacred-texts.com/etc/ml/index.htm
http://www.casa.ucl.ac.uk/digital_egypt/hawara/
http://www.amazeingart.com/seven-wonders/egyptian-labyrinth.html
http://www.casa.ucl.ac.uk/digital_egypt/hawara/bibliography_old.html
"Herodotus (ca. 484-430 BC): One passage in Histories, Book, II, 148.
In the second book of his History, the Greek writer Herodotus gave the following account of the Labyrinth:
This I have actually seen, a work beyond words. For if anyone put together the buildings of the Greeks and display of their labours, they would seem lesser in both effort and expense to this labyrinth - even though both the temple in Ephesus and the one in Samos are remarkable. Even the pyramids are beyond words, and each was equal to many and mighty works of the Greeks. Yet the labyrinth surpasses even the pyramids.
In it there are twelve courts with roofs, each with facing gateways, six oriented to the north and six oriented to the south. It contains two sets of chambers, one below ground and the other aligned on top, three thousand in number - fifteen hundred in each set. I saw the upper series of chambers myself, passing through, and speak from my own observation, whereas I learned of the underground series by report. For the Egyptian authorities were utterly unwilling to show them saying they contained the burials both of the kings who had caused this labyrinth to be build, and of the secret crocodiles.
So I speak of the lower chambers from listening to others, but have myself seen the upper ones - beyond human labour. For the ways out through the roofed areas and the extremely intricate windings through the courts arose infinite wonder, passing from court to chambers and from chambers to porches (?), to other roofed areas from the porches (?), and to other courts from the chambers. For all of this the roof is of stone, like the walls, and the walls are covered with carved motives, while each court has a colonnade of white stone exactly joined. At the far end of the labyrinth stands a pyramid of forty orguiae which include the carvature of mighty figures. The way into this is cut below ground."
Diodorus Siculus (1st century BC): Two passages in his history, Book I, 61 and 66.
When the king died the government was recovered by Egyptians and they appointed a native king Mendes, whom some call Mares. Although he was responsible for no military achievements whatsoever, he did build himself what is called the Labyrinth as a tomb, an edifice which is wonderful not so much for its size as for the inimitable skill with which it was build; for once in, it is impossible to find one's way out again without difficulty, unless one lights upon a guide who is perfectly acquainted with it. It is even said by some that Daedalus crossed over to Egypt and, in wonder at the skill shown in the building, built for Minos, King of Crete, a labyrinth like that in Egypt, in which, so the tales goes, the creature called the Minotaur was kept. Be that as it may, the Cretan Labyrinth has completely disappeared, either through the destruction wrought by some ruler or through the ravages of time; but the Egyptian Labyrinth remains absolutely perfect in its entire construction down to my time. "
http://en.wikipedia.org/wiki/Terracotta_Army
"According to historian Sima Qian (145-90 BC), construction of this mausoleum began in 246 BC and involved 700,000 workers. Geographer Li Daoyuan, six centuries after the death of the First Emperor, explained that Mount Li had been chosen as a site for its auspicious geology: it once had a gold mine on its north face and a jade mine on its south face, demonstrating not only its sacred value, but also perhaps how the tunnels had come to be dug in the first place.[3] Qin Shi Huang was 13 when construction began. He specifically stated that no two soldiers were to be made alike, which is most likely why he had construction started at that young age. Sima Qian, in his most famous work, Shiji, completed a century after the mausoleum completion, wrote that the First Emperor was buried with palaces, scenic towers, officials, valuable utensils and "wonderful objects," with 100 rivers fashioned in mercury and above this heavenly bodies below which he wrote were "the features of the earth." Some translations of this passage refer to "models" or "imitations," but he does not use those words.[4]
Glorantha, even in the First Age, is much too modern for such cultures. Nysalor is connected with Zen, not with pyramid-building pharaohs. There are, however, certain aspects common with the Bronze Age mythology - eg the Underworld.
It is certainly possible to imagine a Dawn Age culture which built underground enormous tombs for their kings. The Yelm cult would seem most fitted for that kind of "Egyptian" society, esp. because of his death and return from the Underworld.
Such a tomb holds the body of the king, his court, his warriors, monsters etc. The soul of the king would live in the paradise of Yelm for as long as the body was intact.
The tomb is a direct connection to the Underworld. For that reason, the dead can be alive there. They sleep, but wake when an intruder enters the tomb. In addition to the awakened corpses of people buried there, the tomb is guarded by traps, monsters etc.