When the brothers Sengar are sent down into the valley containing the bones of Scabandari Bloodeye, pretty early in MT, Fear gives his brothers a brief history lesson- about the KCCM and when the Edur first came to this world. But he reveals alot about the KCCM magic- how it holds their fortresses afloat etc.
Quote
....'The end, the death of the abyss, cannot be averted.... The Kaschan locked all things into mortality, into the relentless plunge toward extinction..
A distant death, aye. More distant than one could imagine. Yet it will come....
The Tiste invasions dorve the Kaschan to their last act. Father Shadow earned the enmity of every Elder god, of every ascendant. Because of the Kaschan ritual, the eternal game among Dark, Light, and Shadow would one day end. And with it all of existence.'
Sorry the quotes a bit long, I tried to edit some of the less important parts. But I thought this was incredible for a number of reasons.
So the KCCM sorcery is based on sound(which is wicked cool) but it explains alot of what the KCCM do, that they use to not only float their Sky Fortresses, but probably to enter other realms( a guess), and apparantly made a black hole which they then sent into KG, which will eventually swallow everything and be the end of all existence. But... Fear believes that the KCCM are enitrely gone from the world( which we know is not true) so is it possible that this is a major plot line, given that KCCM are back, will they try to fix it? or is it something so far in the future as to be worried about only by gods, godesses, and other immortals?
Also it shows the beginning of the problems with KG, which led to Mother Dark fleeing and the Andi being dispossessed.
It also explains why the immortals were so pissed at Bloodeye, and why they tracked him down and killed him. It wasn't the betrayal, I always thought the other Elder gods etc. took it a little personally. I'll have to read that prologue which shows Kilamandros finishing him off again to see if it says anything about it.
And, once again, its a detail that just shows the size and scope of SE's imagination, which once again leaves me shaking my head and thanking all the gods he wrote these books.