The Building of Barad-dûr

[Inziladun]

Originally Posted by Alfirin

Another point may be the foundations may have not have been "built" in the sense we are thinking. Going back further, to Melkor's Angbad and Utumno, I have always thought that they might not have been "built" in the sense we think; but putting stone upon stone. Given Melkor's power he may have actually casued both structures to form from the living rock, or have had some of his fire Maiar (like the Balrogs and Dragons, when they were not off battling) melt all of the stones together, so the castle became one solid mass.

I don't think Utumno and and Angband were comparable to the Barad-dûr. The former were subterranean dungeons, not above-ground fortresses. Angband had near it the "towers" of Thangorodrim, true. However, I highly doubt Sauron would have had a similar power of the earth itself, either with the Ring or without it.