Deadlands--Follow the Walkin' Man
The Eye of Light and Darkness
The Eye of Light and Darkness is an ancient sigil, described in such books as the Al-Azif Necronomicon and Di Vermis Mysteriis. Word is that it can bar creatures from “beyond” from entering our world.
The posse used a carved version of The Eye of Light and Darkness to bar the monster in DeepWater Lake from coming through into our world. They did so only after stealing the item from the Whateley Clan’s summer home, then defeating both the Whateleys and Jeremiah Riggins atop New Sentinel Hill, overlooking the lake.