
Mountain of Black Glass
- 784
- Pages
- about 14 h
- Reading time
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About the book
Mountain of Black Glass is a science fiction novel by American writer Tad Williams, the third book in his Otherland series. It was first published in 1999 with a paperback edition in 2000.
Reading order · Otherland
Full order & progress →- City of Golden ShadowStart here
7.67.6 / 10 - River of Blue Fire
7.77.7 / 10 - Mountain of Black GlassThis book
7.97.9 / 10 - Sea of Silver Light
8.08.0 / 10
Where the score comes from
The sources average 7.7 across 107 ratings — not yet many, so the reader vote carries 41% of the weight and the rest pulls toward the Science fiction average of 7.8. That is how 7.9 comes out.
| Source | Average | Ratings | Weight |
|---|---|---|---|
| Open Library | 8.6 | 7 | 7% |
| Hardcover | 7.7 | 100 | 94% |
Reader voices
The most-liked reviews on Hardcover (credited to their authors).
“Executive Summary: Things are really picking up in the 3rd of this 4 volume doorstopper. Audio book: Another excellent job by George Newbern. With books as long as these, it's important to have a good narrator, and thankfully they've made a good choice. Clear, good…”
“There's nothing worse about this than any of the other books in this series, but after a while they get so same-y that I've never managed to actually finish book 3. Book 4 remains wholly untapped for me.”
Frequently asked
How long is Mountain of Black Glass?
It has 784 pages — longer than 81% of the ranked books in Science fiction.
If you liked this
The same shelf — Science fiction — and a score of 7.9, the closest to this book.





