The Green light
The green is the light that is on a dock at the daisy's house. Gatsby all ways watch the light this means hope for him. because it give him hopes to go and see daisy and have a relation ship with her.
Valley
is a place that is between mounts and a river and this place represents a border that separate the rich people and the poor people. on the valley of aches live poor people and it is full of destroyed stuff