I guess you get what you pay for. Do Not do the self guided tour if it is your first time and you drove awhile to get here. You really do not get to see much and it is very short. We will come back next year and do one of the longer , more expensive tours and see if they are better. We had 3 children ranging in age from 9-13 and they kept acting up so we could tell they were bored. Afterward we went to the Lost River underground cave tour and they were quite as church mice and not acting up (it was awesome). Prices at Mammoth are reasonable. Take a jacket because it is in the 50's down there ALL the time. My husband didn't want to take a jacket but thanked me later.
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