Orwell uses different types of imagery in Part Two, Chapter Two of 1984. In the opening paragraph, for example, Orwell creates an auditory image of doves "droning" in the background and, later, of a person stepping on a twig, which makes a "crackling" sound. He also evokes the "sickly" smell of bluebells, which is an example of olfactory imagery.
Orwell uses visual imagery, too. Firstly, there is the image of the "overflowing" carriage, which he uses to travel to this clearing in the woods. Later, there is an image of Winston holding a large bunch of bluebells, which he has picked for Julia.
The purpose of this imagery is to create a stark contrast between this clearing in the woods and the city. For Winston, the woods are reminiscent of the past, of a time before the Party came to power, and of his hopes for the future. The city, in contrast, represents the brutal and oppressive regime of the Party.
1984 Part 2, chapter 2 is filled with nature imagery, connoting a "Garden of Eden" rendezvous between Winston and Julia in the Golden Country.
Colors dominate the landscape: "dappled light and shade, stepping out into pools of gold"; "misty with bluebells"--all of which symbolize Spring, freedom, re-birth, and love.
It is May, and the smells of flowering buds fill the air: "He had got together a big bunch and was smelling their faint sickly scent"; "Winston followed, still clasping his bunch of flowers. His first feeling was relief..."; "The sweetness of the air and the greenness of the leaves daunted him."
Winston is a bit paranoid still, as he is escaping the watchful eye of Big Brother and traveling secretly to the country. Sound imagery is also prevalent: "the unmistakable crackle of a foot on twigs"; "She shook her head, evidently as a warning that he must keep silent."
The scene is reminiscent of Adam and Eve about to partake of the Tree of Knowledge of Good and Evil for the first time. They are about to have carnal relations away from God's watchful eye. They sense their impending fall and shame, yet they are excited by the rebellion nonetheless.