Nemetondevos
The Nemetondevos are the gods of Gaul, a pantheon destroyed long ago by Caesar. The Nemetondevos have no unified plane but instead have thousands of individual demiplanes, each connected to the world through nemetons. This gives the pantheon a strong interest in preserving the natural world: without it, their realms would be eternally isolated. The stereotype of the “druid as conservationist” is well earned.
Most godsrealms follow a “downward” motif—caves, pools, roots—but only the Wheel serves as the Nemetondevos’ true Underworld. There, the dead ride an impossibly vast wooden Ferris wheel, weighed down by a lifetime of memories. At the lowest point, Belenos washes those memories away in his great cauldron, allowing the soul to rise again toward reincarnation. Memory, mortal and divine alike, is the fuel that turns the Wheel, and the Wheel moves the universe. Its upper arc reaches into Taranis’ sky-realm, the only Gaulish domain that truly qualifies as an Overworld.