NOT_FOUND
However, I assume you meant Grand Prismatic Spring Restaurant located near Midway Geyser Basin, Yellowstone National Park.
Unfortunately, after conducting research, I was unable to find any relevant information about a restaurant with this name at the specified location. However, I can tell you that the Grand Prismatic Spring is actually a natural wonder in Yellowstone National Park, known for its vibrant colors and unique geothermal features.
It's possible that there may be no restaurant by this name or it might be an incorrect assumption. If you could provide more information or clarify your query, I would be happy to try and assist further.