

Decipher the astronomical alignments and hidden geometry of the Hopewell ceremonial complex. Two thousand years of secrets lie buried in earthen walls—uncover why this sacred landscape was abandoned.

Decipher the lost astronomical code of the Hopewell civilization hidden within Chillicothe's sacred earthworks before the truth is buried forever.
The Explorer Pass is valid for 12 months from the date of purchase. The City Pass has no expiration date.
Each code is linked to a phone. If you play with multiple people on the same phone, one code is enough.
After purchase, you immediately receive your codes by email. Activate them one by one whenever you want.