Hi.

I'm at the puzzle you're supposed to solve in order to get the stone glyph. I've put all blocks into their proper places (they do a distinctive noise once they fit), except for one. It's the block on the upper level you're supposed to push down into the lower level.

The problem is there's a small bump on the walkways that prevent pushing blocks to the lower level. I even tried stacking it on top of another block, and put yet another one right next to it to push it down, but it won't go. How am I supposed to push down that last remaining block?

You're not supposed to push any blocks in the main chamber to a lower level. 4 blocks on the higher floor are placed there. One block on the lower floor is in the main room but the second is hidden on a higher level to the right before the main entrance (next to a torch that you can pick up) - you should be able to push that one down without problems.

That worked, thank you very much! How do I mark this as solved?

By the way, the extra block I had on the upper level of the main chamber did not fit anywhere. I managed to get past this puzzle without using it. It's strange to leave behind an unused block like this.

You can't because you posted the topic as a discussion instead of a question.
Also, all Glyphs are purely optional so you can always continue the main storyline if you find problems and return to them later.