Anchor: The once densely forested fells and valleys were a safe and bountiful territory for prehistoric hunter-gatherers, and later, around 2500 b.c. , after the forests had receded due to changes in weather patterns, settlers used the clearings in the lowlands for small-scale farming.
Entailed: The valleys were a safe territory for prehistoric hunter-gatherers.
Contradiction: The British soldiers used the valleys for farming.
Contradiction: I never forget anything. 
Contradiction: We weren't informed of the reason why these people had fallen out.
Contradiction: The short time allows them to see only one region.
Contradiction: The girl is outdoors.