Overview
Thorn Bear Cavern (刺熊洞穴, Cìxióng Dòngxué) is a monster-lair sub-location of the West Yunluo Highlands surrounding Frostcloud Town. It is one of two named wildlife dens tied to Chapter 3's main plot, the other being the Digging Wolf Lair. Both appear in the Chapter 3 walkthrough as investigation sites after Fengyu briefs the player at Crimson Falcon Hall about unnatural aggression in the local ecosystem.
The Thorn Bear
The cavern is named for its resident creature, the Thorn Bear (刺熊), a spiky variant of the region's bear wildlife whose behavior has been disturbed by the same Cloud Fall phenomenon that drives the chapter's bosses. The lair functions as a mini-dungeon: a short linear cave path leads to a boss room with a Thorn Bear elite or pack encounter, with scattered treasure chests and 赋神令 Fate Tokens along the way.
Story Connection
Completion is required for full Chapter 3 exploration credit but is not strictly required for main-story progression beyond a threshold. Players learn more about how the corruption affects wildlife by observing the scarring on the boss creature and reading the nearby Suowen entries Fengyu provides.
Visual Design
The cavern interior leans dim and moist, with bioluminescent moss and cloud-silk runners anchored in the stone. Ambient audio uses low growls and dripping water rather than score, reinforcing the lair's isolation from Frostcloud Town's busier ambience.
Paired Exploration
The cavern pairs thematically and mechanically with the Digging Wolf Lair, and players typically clear both in sequence on the same Chapter 3 exploration pass. Its waystone, once activated, anchors return trips for loot cleanup and becomes a standard travel node for the West Yunluo collection run.
Sources
GamerSky Chapter 3 walkthrough (article 2122122_5).