Chthonic Siren

The work of uncovering this site was technically straightforward - despite our having to work in staccato shifts. We removed two featureless strata before encountering a large shell or dome. Other, identical domes have been partially uncovered nearby; so far they seem to be arranged in an arc or circle.

Each dome was constructed from a mold, and was cured to such a degree that they have withstood geological ages. Ingress to these structures - each of which is the size of a gathering hall - should be possible.

Our study of the domes on … and elsewhere has reached an end. Each site is a vast astrological device, synchronized with others like it across interstellar distances.

Our studies suggest that facilities like this one were treated as focal points for cosmic energy, affecting a general 'sense of place' for the ancient civilization which built them. Etched records speak of councils who would 'channel' these energies in order to guide their empire's fortunes.

Such observances did not halt their society's eventual decline, but in the millennia which followed there also came an inheritor who would translate and revive the practice. They too have since left these sites, for parts unknown.

The vast timepiece has slowly ticked on through the periods of at least two civilizations; its automated siren has now called on us to observe this ritual at sites across our region of space. Whether or not anything tangible results from it, the … is now poised to observe...