$8 for adults, $7 for seniors (65+), $6 for students w/ an id, $4 for kids (4-16) and kids under 3 are free. We also have a locals rate, so ask at the counter if you live in Washington County, and a group rate for 10+ people.
I think it was $8 for adults and $5 for kids. I think it was worth it for one time. My kids and I love dinos and it exceeded my expectations.
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