Answer:
I am a mountain at night meadow at day
I think you live beneath a roof that is upheld by me; I think you seldom walk abroad but my fair form you see; I close you in on every side you very dwelling pave and probably I'll go with you At last into the grave.
What bone has a sense of humor?
I'm the source of all emotion but I'm caged in a white prison.
You can read me both ways I wear; One way it's a number reversed a snare.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.