Glade of Chains

Worshippers of Tiwaz and the ancient Germanic gods would travel to one of the Glades for worship. Faithful chain themselves as a sign of their faith, and only the chained are allowed entry into the glade.
Tacitus writes of the Glades:

On the agreed day, the representatives of all peoples sharing the same blood meet in a forest, consecrated for centuries by rituals and fear, and there, having killed a man in the name of the community, a horrendous barbaric ritual begins. Their reverent subjugation before that sacred forest is also expressed in other ways: nobody can enter unless bound by chains, thus attesting to their dependence on the power of the god. Should anybody fall, they cannot rise to their feet either on their own or with anybody's help, but rather must crawl along the ground.

They have not been used in generations, and belong to a pantheon older than the current Germanic gods.