I don't know who the author of 'the dark island novel' is. There are so many novels out there, and without more information, it's difficult to determine the author.
I'm not sure specifically as I haven't read it. It could be about a mysterious island full of dark secrets, perhaps with strange creatures or a complex web of human relationships within that island setting.
In the 'dark wanderer desert island story', he could be building a shelter to protect himself from the elements. He might use branches, leaves and whatever natural materials he can find on the island. Also, he would likely try to find a source of fresh water, which is crucial for his survival. Maybe he would dig in the ground hoping to find a spring or collect rainwater.
The story may also use the island as a metaphor. It could represent a state of mind or a situation in a person's life. For example, the 'darkness' of the island could symbolize the difficulties or challenges that a character is facing. The characters in the story might be on a journey to discover the truth about the island, which in turn could be a journey of self - discovery.
I'm not sure which specific 'island of children' dark story you are referring to. There could be various fictional or perhaps even real - but less known - stories with such a title. It might be a made - up horror story about an island where strange and dark things happen to children, like they get trapped there by some malevolent force or encounter some sort of cursed entity.
It could mean that the story about the island is filled with mystery or gloom. 'Dark' might imply that there are hidden, perhaps not so pleasant aspects to the story.
One key element could be isolation. The island isolates the children from the outside world, making it easier for the dark forces or events to occur without interference. Another might be the vulnerability of the children. Since they are young and defenseless, they are easy targets for whatever malevolence is on the island.