How was Emily Dickinson able to write excellent poems with her limited exposure?

It seems that inspiration and experience is necessary for writing of depth. They say the best way to get inspiration is to travel and see new things. They also say travel stimulates the imagination. I know several people hold to the opinion that new ideas are necessary to keep the fire of fantasy going in a writer’s mind. Basically, getting out into the world is essential to avoid writer’s block or stale text.

Then here comes Emily Dickinson. While other writers were traveling to Europe, becoming editors and attending universities, she completed only one year of higher education and then returned home, where she isolated herself in her home from most of the world. One would think such a quiet and drab existence would lead to bland poems, and yet she produced rich ones. Today, she is one of the most widely read American poets.

How is it possible for a person who was a near social and cultural hermit to come up with high grade poems? How is it possible for a person who only left her home town a few times to write such quality poems? How can a near hermit have such varied subject matter? Thoughts?