http://www.sciencemag.org/news/2019/04/first-cherokee-cave-inscriptions-commemorate-ancient-lacrosselike-game

There are places where the world of the living brushes up against the world of the spirits. For the Cherokee of the Southeastern United States, those places are caves, where the heat of day gives way to the coolness of damp earth, and the light of the sun is exchanged for the darkness of deep, timeless spaces.

Now, researchers exploring several caves near the Alabama-Georgia border have discovered, for the first time, inscriptions describing sacred rituals and reaching out to ancestors, all in the Cherokee script invented by prominent Native American polymath Sequoyah before his people were forcibly moved to western reservations in the 1830s.