“The hills about Wendover and, as far as I could see, all the hills in Buckinghamshire, wear a sort of hood of beech plantation; but in this particular case the hood had been suffered to extend itself into something more like a cloak, and hung down about the shoulders of the hill in wide folds, instead of lying flatly along the summit. [. . .] The prevailing colour was a dull, smouldering red, touched here and there with vivid yellow”
(RLS, “An Autumn Effect”, in Essays of Travel [London: Chatto and Windus, 1905], p. 119-20).
In October of 1874 RLS took a walking tour of the Chiltern Hills, Buckinghamshire. He later wrote about his experiences in “An Autumn Effect”, first published in The Portfolio in 1875. You can read this essay in Essays of Travel (1905).
You will find here a brief description of RLS’s route:
RLS left High Wycombe and walked to Great Missenden, where he stayed the night. The following day he walked to Wendover, staying the night in an inn. In the morning he went to church in Wendover, and then took a dog-cart from Wendover to Tring. From Tring railway station he took a train to London.