Appears in: Myst, realMyst
Written by: Atrus
Once, there was an island below them. On this island lived humans. The tree-dwellers lived in peace with the men, and resided in the trees. At some point, rumblings began in the island. Soon, it began to sink into the sea. According to the man, the humans had somehow sacrificed themselves to stop the collapse of the island. The rest of them moved into the trees, which was the only place left for them. However, they were ill-suited for life in the trees, and they slowly perished, leaving him the sole remaining survivor of the calamity. After relaying this tale to Atrus, he rose, and walked out of the tree house onto the pier below, killing himself. The tree-dwellers mournfully committed him to the sea, from which point on the water no longer changed color; something for which Atrus was never able to find an explanation.
According to Atrus' journal, he set up a system of hydro-electric power on Channelwood, in order to power elevators from the paths over the sea to the trees. He also notes that his sons were able to communicate much better with the tree-dwellers than he was. In the end, Atrus allowed them to visit Channelwood by themselves. What became of the tree-dwellers is a mystery. It is assumed that they were somehow slaughtered by Sirrus and Achenar.
It must be noted that Channelwood never contained weather animations (stars, clouds, sun/moon), and all that can be seen is a dull white backdrop from wherever the player looks.
Channelwood Map from Myst Masterpiece Edition: