How does Kidnapped reveal the physical and social geography of Scotland?

Robert Louis Stevenson takes readers on a romp across the
terrain of Scotland in Kidnapped as hero David Balfour seeks his
destiny after his father's death. He travels on foot across the distance between his
home and his Uncle's manor to receive a warm welcome that leads him to climb to his
hoped-for but thwarted death before being reverse-shanghaied by a sea captain who is
bribed to run off with him. After meeting the dashing Alan Stewart, David treks to
fjords and sneaks his way across them, hides out in Highlands get-aways, and sneaks by
light of moonshine (unless they oversleep) across rocks and plains as he and Alan, with
a bounty price on his head, try (and sometimes fail) to stay one night ahead of the
British Redcoats who take it in earnest that Alan fought in a rebellion against the King
of England. Through all the travels, tales and adventures, Stevenson spreads the
geography of Scotland out before readers as David and Alan cover Scotland's terrain from
Highland to Lowland to ocean fjord.

As David leaves the
safety and comfort of home in Essendean among the Campbells, who love and respect him as
a son, at the outset of his adventure to seek his Uncle in a distant part of Scotland,
Stevenson begins a journey through the social landscape of Scotland. There is a great
contrast made between the social groups of the Lowland Camapbells, who are English
loyalists upholding the House of Hanover on the throne, and the Highlanders, who are
sympathizers with the dethroned House of Stuard. In addition, the Campbell's social
order is modest and work-a-day while the Balfour social order, to which David believes
he is traveling, is one of gentlefolk and manors and estates for villagers to cater to
while the Highland Stewarts are rough and ready mountain folk who can play a Scottish
pipe and dance a Scottish jig as well as they can fight against the House of Hanover.
Stevenson's tour of the cultures of Scotland reveals the social, economic, cultural,
political and religious differences of the varying quarters.