Dark Eden, by Chris Beckett; narrated by Matthew Frow, Jayne Entwistle, Ione Butler, Robert Hook, Heather Wilds, Nicholas Guy Smith, Hannah Curtis, Bruce Mann
When a group of four people have to land on an unknown planet to regroup and repair their ship, they decide to split into two groups - a man and woman who do not want to risk the flight back remain on "Eden" alone, and the two others set back off for Earth with promises to send a rescue ship as soon as possible. Generations later, the people of Eden are still waiting. Still hanging out in exactly the same crash-landing spot. Still following the matriarchal rules structured by the mother of all. But their small area is becoming too crowded. They have to forage farther and farther for food.
