What are the symbols in "Stopping by Woods on a Snowy Evening"?

It could be said that the woods are symbolic of the
narrator’s desire to be diverted from the journey of life that he is on. If we think
about the historical context of the poem, and the increasing pace of life that was being
experienced during the 1920’s, we can appreciate the appeal of the ‘frozen lake’,
challenged only by ‘easy wind’ and ‘downy flake’. The setting of the poem symbolises the
natural, beautiful, peaceful environment, which is no longer appreciated by those whom
it belongs to, and is sadly shunned by those with ‘miles to
go’.

 The setting therefore can be said to represent the
beauty of the past, and increasingly less present, state of the US. Frost sets the poem
on-

‘The
darkest evening of the
year.’

This could
mean that the future will be brighter, or that the time to enjoy and contemplate such
surroundings has passed as life has to move on at an ever increasing rate into the
future-

‘And
miles to go before I sleep.’