The Glarebreak is an unmarked location in Horizon Zero Dawn, to the west of Free Heap and north of the Coiled Canyon. There are Thunderjaw sites in/near the Glarebreak: the first is located north of the Glarebreak; the second site, with two Thunderjaws, is located within the Glarebreak.
- "The trail of blood dries up shortly after entering the Glarebreak, but not before taking you to another investigation area;... This part of the Glarebreak is home to a very large herd of Tramplers"
- ―Horizon Zero Dawn Collector's Edition Guide, p. 429, re: To Old Acquaintance