Separated from Yellowstone National Park by only 10 miles, Grand Teton National Park is another of our favorites that we have visited many times. Though we have camped in the park on some previous visits, this time we stayed at a campground on the Snake River south of Jackson, Wyoming.
The park is named for Grand Teton, the tallest peak, 13,775 feet (4,199 m), in the Teton Range, which rises abruptly above the valley of Jackson Hole.
Jackson Hole is believed to be named after a mountain man, David (Davey) Edward Jackson, a mountain man who trapped the area for beaver in the early 1800s. The name “hole” is a term used by early trappers who entered from the north and east, descending along relatively steep slopes, giving the feeling of descending into a hole.
The town of Jackson, Wyoming, the only incorporated town in the valley, is often mistakenly referred to as Jackson Hole.
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References and Resources:
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as well as internet resources. I’ve included links to a few reliable resources below and have more on my 
West Thumb Geyser Basin is situated on the shore of Yellowstone Lake’s West Thumb, a submerged volcanic caldera within the larger Yellowstone caldera. It was created about 162,000 years ago when a magma chamber bulged up under the earth’s surface, which it cracked along ring fracture zones, releasing the magma as lava. Once emptied, the chamber collapsed and, later, the caldera was filled with water, forming an extension of Yellowstone Lake.
Yellowstone References and Resources:
