Ynys Wydrin

Not every Currach Fleet ark found a world as forgiving as Tír na nÓg. Ynys Wydrin's colonists found thin, unbreathable air, permafrost, and a name already waiting for them in their own mythology.

Ynys Wydrin — Welsh for "Isle of Glass," the old name for the otherworldly isle behind Glastonbury — is the second-settled charter world of the Celtic Union of Planets. Unlike Tír na nÓg, it is not naturally human-compatible: thin atmosphere, subfreezing surface temperatures, and a biosphere too chemically alien for direct human agriculture. It is the second planet of the Avallach System, named for the mythical king said to rule the isle of Avalon — Ynys Wydrin's own namesake in Welsh tradition.

Why They Stayed

The ark assigned to survey this system considered continuing on to a more hospitable candidate world flagged in its own long-range data — a two-generation additional transit. The settlement cooperative voted against it.

Their reasoning, preserved in the founding charter's minority-turned-majority opinion: a Celtic-language community raised entirely on an effortless world risked becoming a museum piece all over again, the exact outcome the Currach Fleet had left Earth to avoid. A harder world, they judged, would keep the culture's working relationship with hardship — the thing they worried a purely comfortable Tír na nÓg might eventually lose.

Tír na nÓg's own colonists dispute this reading of their world to this day.

Settlement Character

Ynys Wydrin follows the inverse of the biosphere-world register: technology declares itself at every turn rather than receding into it. Composite dome decking, audible recyclers, maintenance drones on visible patrol routes, power cells racked in plain view — the same pattern documented generally under Remote Stations. Nothing here is trying to look natural, because survival depends on the systems being legible and constantly maintained, not on blending in.

Domed townships sit under transparent composite canopies engineered to transmit the specific light spectrum Earth crops and Earth-descended humans actually need — a deliberate, expensive choice, since the world's own daylight runs bluer and dimmer than Earth's. Colonists call the effect "borrowed sun," and mean it fondly.

Role in the Union

Ynys Wydrin holds the Celtic Union's shared fabrication and life-support engineering base, since its survival demands make it the Union's most technically sophisticated world by necessity rather than choice. Union-wide dome technology, recycler design, and cold-world agricultural methods are developed and exported from here — including, decades later, to two of the Union's later charter worlds that turned out to need it.

See also: The Celtic Union of Planets, Tír na nÓg, Environmental Technology Design, Aethelrock (whose Clan Avalon fellowship takes its name from the same Avalon myth-cycle as this system's own).