Expect new social structures. In 10000 years, the concept of family and community might be very different. People could be grouped based on their skills or genetic enhancements. There could also be a hierarchical society based on technological access or knowledge.
It could be about how human society has evolved. Maybe humans have mastered interstellar travel and colonized other planets. There could be new forms of government, culture, and technology that are unimaginable to us now.
The main characters could be a group of scientists. They are exploring the remnants of the old world and trying to piece together how things used to be. Their curiosity drives them to make new discoveries that could either save or destroy the future world they live in.
Perhaps the novel could focus on the struggle for power. With the passage of 10,000 years, new political and social systems would have emerged. There could be a powerful elite that controls the most advanced technology, and a group of rebels who strive to make this technology accessible to all. The story could be about their fight and the changes it brings to the world.
The novel might focus on how future societies have managed to survive for such a long time. There could be advanced technologies that allow them to travel through time or live in parallel universes. It could also explore the moral and ethical dilemmas that come with such capabilities. For example, should they change the past to prevent disasters? Or should they let history run its course? The characters in the novel would be dealing with these complex issues.
It could be filled with highly advanced technology that we can't even imagine today. For example, spaceships that can travel across galaxies in seconds, or artificial intelligence that has become an integral part of every living being's life. There might also be new forms of life and ecosystems that have evolved over such a long period of time.
Well, in such a light novel, the story could revolve around the people or beings doing the logging. They might face new moral and ethical dilemmas. For example, logging might be necessary for the survival of a colony, but it could also destroy the unique ecosystems that have developed over 10000 years. There could be conflicts between different groups - those who want to preserve the forests for their beauty and those who see them as a resource. Also, the species of trees could be very different, perhaps with magical or technological properties.
It could start with a prophecy or a prediction that has been passed down through generations. This prediction is about the state of the world 10000 years from now. A group of people, maybe historians or adventurers, decides to find out if this prediction is true. They embark on a journey to explore the future, and as they do, they start logging their findings. Their first steps into this unknown future time could involve using some kind of time - traveling device or a new form of divination to guide their way.
It could show a society that has completely done away with the concept of money. Resources are shared equally, and people contribute based on their skills and interests. There might be no more countries or borders, but a global community united by a common goal.