Activating a light orb, you carefully venture inside.

In the center of the domed building you find a massive ocular device, much like the smaller cylindrical one you found elsewhere in the city. The device only seems to point up toward the heavens, and you find various charts and maps of stars scattered on nearby tables, as well as old papers which make reference to an 'aurora'.

Closely studying the notes, you realize they are talking about the streams of colorful lights which appear in the sky with each new moon. You know them as the Witch Light, the phenomenon feared by all of humanity that is said to enhance the power of witches and cause foul things to awaken beneath the Deepwood trees. There are some who believe the tales are simply myths told to frighten children, but you know better. Free Companies can always expect more work when the Witch Light shines. Most people choose to stay indoors when the phenomenon occurs, yet it seems the people of this forsaken kingdom had been closely studying it.

One of the papers read

'Hypothesis: Aurora formed by charged particles in the upper atmosphere.

Conclusion: Incorrect. Observational data finds no connection between solar or magnetospheric activity. This was the last probable naturalistic explanation.

Origin of the Aurora remains unknown.'

Your findings raise more questions than they answer. An intriguing study but best left for another time. Hefting your packs you head back outside.