Does “through which” here refer to the trees or does it refer to the valley-land itself?
It was a green valley-land dotted with trees through which he caught the gleam of a river that wound away roughly to the Northwest.
Does “through which” here refer to the trees or does it refer to the valley-land itself?
It was a green valley-land dotted with trees through which he caught the gleam of a river that wound away roughly to the Northwest.
He would be looking through the trees.
In the absence of a comma after ‘trees’, we can infer that it refers to the ‘trees’.