Maybe I am conflating two or more tales… CRS has struck.
Typical alien intervention time travel sorta deal.
A compound, several acres in size with outbuildings and a barn with animals and horses.
ATVs ridden to the river side where they gathered Guinea Hen eggs on a rocky beach.
Miles long tunnels with vantage points. Bunk rooms with kitchens at the vantage points. Riding the horses in the tunnels. Hauling hay bales to feed the horses at the vantage points.
Several nearby tribes were persuaded to catch and tame horses. One tribe was lax in cutting and properly preserving the hay to feed the horse herd over the winter and then the poorly prepared hay caught fire.
Ring any bells?
