Brief question answer about a pome (300-600 words)

Stopping by Woods on a Snowy Evening

BY  ROBERT FROST

Whose woods these are I think I know.   

His house is in the village though;   

He will not see me stopping here   

To watch his woods fill up with snow.   

My little horse must think it queer   

To stop without a farmhouse near   

Between the woods and frozen lake   

The darkest evening of the year.   

He gives his harness bells a shake   

To ask if there is some mistake.   

The only other sound’s the sweep   

Of easy wind and downy flake.   

The woods are lovely, dark and deep,   

But I have promises to keep,   

And miles to go before I sleep,   

And miles to go before I sleep.

Robert Frost, “Stopping by Woods on a Snowy Evening” from The Poetry of Robert Frost, edited by Edward Connery Lathem. Copyright 1923, © 1969 by Henry Holt and Company, Inc., renewed 1951, by Robert Frost. Reprinted with the permission of Henry Holt and Company, LLC.

Source: Collected Poems, Prose, & Plays (Library of America, 1995)

What is significant/meaningful about the setting of the poem? What does the horse symbolize, and why does the speaker decide to leave if he likes the snowy woods so much? What is Frost trying to say about life, nature, the modern world, and/or human obligations? Use elements of poetry (imagery, symbolism, form, etc.) to elaborate. Do not look up anything online! I want your analysis from reading the work.