Explorers of Rinth by John Simons

SPSFC 2023

Aristotle wakes with no memory after being left for dead in a place that carries the seeds of a distant and dying Earth, but he is not alone. The survival of the human species rests on his shoulders and a small group of discarded humans. Meanwhile, Iseulte and her friends flee the spark of civil war that engulfs their home. They escape into long-forgotten tunnels where they find that things Humanity dabbled in and abandoned have taken on their own lives and destinies. Although separated by unimaginable distance, the future of these two groups was bound together in the distant past by the strangest secret of all.