Take the following as truth: 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.
Then the following statement: "The valleys were a safe territory for prehistoric hunter-gatherers." is true, false, or inconclusive?