nostr:npub1ywyvcvvkchy6g2udk5n79zzc78jm6nl4gqhy2jttkl7pwtszt75qrfcksd You can't see it in this photo, but a mirrored configuration is duck-taped to the ceiling on the next floor down.  The summoning circle is then drawn orthogonally to the first circle, on the floor, before the ritual begins.