Yellowstone: Old Faithful

This week I chose Yellowstone National Park. Old Faithful would be the first thing I would want to see while I am there. My friend went to see Old Faithful last summer and she said it was truly amazing. She had pictures she showed me and I think it is just wonderful. I am curious as to how a little hole in the ground like this can produce such a huge explosion of gases like it does.

Source: wildnatureimages.com via Alayna on Pinterest