The Rock Lurker is a large elemental predator that resembles, in every meaningful way, a rough-hewn boulder or outcropping of stone — until it moves. Its body is dense, compressed mineral matter shaped into a hunched, wide-shouldered form with short powerful limbs and a massive flat head that opens into a crushing stone maw. While motionless it is virtually indistinguishable from the surrounding rock, showing no seams, no eyes, no breath. Only after an hour of stillness does it typically attack — launching out of its pose with startling speed and force, striking with overhead slams before its target has time to register what is happening.

Found wherever major mountain terrain exists — the Carpsonic Mountains and Ironspike Range in [Irna](Irna/Welcome to Irna), the high passes of [Antaea](Antaea/Welcome to Antaea), the volcanic highlands of [Shoing](Shoing/Welcome to Shoing), and the desert canyon walls of [Jazirah](Jazirah/Welcome to Jazirah). Rock Lurkers are not mountain-specific — they appear wherever there is sufficient exposed stone and foot traffic to hunt. Underground cavern systems are also a known habitat.

Sit-and-wait predators operating on geological patience. A Rock Lurker may hold its position for days before a suitable target passes. It uses tremorsense to track approaching creatures through the rock and prefers to allow prey to settle — resting, eating, sleeping — before striking. Its Lurking Strike ability is specifically triggered by extended motionlessness: the creature waits until prey is at ease before attacking with maximum advantage. After a kill, it feeds slowly and relocates.

Highly dangerous in mountain terrain, where the environment gives it natural cover everywhere. Its physical resilience is extreme — resistance to nonmagical physical attacks — and its senses cover a wide radius underground. The primary vulnerability is thunder damage, which disrupts its mineral body. Experienced mountain travelers learn to tap large rocks before resting against them, and dwarven miners listen for the absence of normal echo in stone as a warning sign.

In Dwarven communities near the Carpsonic range, Rock Lurker awareness is considered basic survival knowledge. Dwarven children are taught the "knock-and-listen" test before mountain travel. In [Irna](Irna/Welcome to Irna)'s mining towns, Rock Lurker encounters are the single most common cause of experienced miner disappearances, though they are rarely reported officially to avoid frightening labor supply.

Large Elemental, Unaligned

Armor Class 17 (natural armor)
Hit Points 102 (12d10 + 36)
Speed 20 ft., burrow 20 ft.

Damage Resistances bludgeoning, piercing, slashing from nonmagical attacks
Damage Vulnerabilities thunder
Senses tremorsense 60 ft., darkvision 60 ft., passive Perception 11
Languages Primordial, Terran
Challenge 5 (1,800 XP)