What details from the story give the reader clues about the setting?

The setting is presented from the very beginning of the story....

The sun was setting, spilling gold light on the low western hills of Rathlin Island. A small boy walked jauntily along a hoof-printed path that wriggled between the folds of these hills and opened out into a crater-like valley on the cliff-top. Presently he stopped as if remembering something, then suddenly he left the path, and began running up one of the hills.