Mirror Lake

name TBD, probably
An underground(?) lake, which is the biggest in Mirror Forest. There are gemstones in the ceiling that reflect on the lake. They perfectly reflect the night sky as it was before the loss of Pakpan. This is confirmed by comparison to star maps from the Time of Thi. The match of the caves to the star maps seem to confirm both that the crystals somehow mirror the stars, and that those star maps are accurate.