Near the end of Mechsong Vale, where the scampering of life met the song of the broken, lies the entrance to the maze. It had been built with disorderly pipes and decaying gadgets following the specifications of the Tall One, who coincidentally had not been seen since its completion. Before he vanished however, he gathered the townsfolk around him and told them about his world.
Love this.
I am always very skeptical about suggesting any changes because you have a beautiful style that draws a reader in.
This intro is wonderful, it tells me everything about the style of the writer, the subtle hints of this different world and there is a consideration in detail, through its constructions, which is becalming.
A writer once wrote to me that when a reader steps into an alien world, it is difficult to create a closeness and trust with the writer, but when writing is done with attention and care, the reader can feel guided and a bond of trust is created and they 'feel' that the writer will not lead them astray.
This is very much like they have said.
I have highlighted two things as mere suggestions. The first is 'the' before maze. Usually, since the reader has not come across this maze, 'a' is more appropriate since it is not mentioned, but this maze seems like a special one, famous... hence the use of 'the' works well, but I would italic it so this doesn't confuse the reader that 'the maze' has been mentioned before or is known, which is not in the case of the reader.
The next I hate to suggest, but I feel 'coincidentally' is alluding to something that else has happened and/or prevented the Tall One from returning. Maybe this is the case, but the reader does not know what the other thing is, thus I would omit on that basis.
Near the end of Mechsong Vale, where the scampering of life met the song of the broken, lies the entrance to the maze. It had been built with disorderly pipes and decaying gadgets following the specifications of the Tall One, who had not been seen since its completion. Before he vanished however, he gathered the townsfolk around him and told them about his world.