The Spines of Ao is a mountain range directly north of the Ravensong Forest. According to Runt in 8BW6, "With vast sheer cliffs whole biomes in height, and windswept valleys packed deep with snow, reaching any of those peaks seemed impossible." According to Max, "The foothills are crawling with undead. The nastier types too. Ghouls, Wights, Husks..." The Sapphire Flame Temple which Pebble and S headed to in 8BW5 and 6 is located among the mountains. The Spines of Ao is named after the dragon prince, Ao.