Thelon III

Thelon III was the home of a pre-warp civilization and also the location of the Nevis Stone, an artifact that connected the languages of three different other planetary civilizations which otherwise shared no cultural connection. It is currently believed by Federation scientists and the bulk of Thelon civilization itself that the Nevis Stone was discovered at some point in Thelon's ancient history and that its discovery kickstarted the development of Thelon language and subsequently, civilization.

In the mid 23rd century, Andorian scientist Silla Sh'thaasreth was conducting archeological research on the planet when she discovered the Nevis Stone, ultimately removing it for further study before realizing the cultural significance it possessed for the Thelon society. The removal of the stone caused significant disruptions to the planet's social order, with many Thelons believing that since the stone had been the origin point of their civilization, its disappearance heralded the end of their civilization. By the time the consequences of removing the stone had by discovered by Sh'thaasreth and her fellow scientists, the overwhelming majority of Thelon society had regressed by over 1,000 years.

By 2339, this turmoil had yet to resolve itself, though any further intervention by Federation elements was prohibited on the basis of preventing further Prime Directive violations.