Lake Istar was a large lake located south of the Lordcity Istar. The Mirshan River emptied the lake out into the Bay of Istar and the Courrain Ocean. This lake was extremely old, having been created before the All Saints War in the Age of Dreams. Beneath the lake were dormant volcanoes that hadn't erupted since before the All Saints War. When they did erupt so long ago, they were the last of the great geological disasters, which buried the area beneath thick layers of ash and soot. The lake was totally evaporated when the Fiery Mountain struck Istar, and the land sank beneath the Blood Sea of Istar.
- Chosen of the Gods, p. 1
- Divine Hammer, p. 46
- Sacred Fire, p. 113, 327
- The Dark Queen (Novel), p. 21, 161