B068 Cavern of Echoes

B068 Cavern of Echoes

Field	Value
BiomeID	068
Biome name	Cavern of Echoes
Climate	SUBSURFACE_CAVERN
Difficulty	7
Starting control	F12 Soulglass Circle
Contested by	F10 Nightroot Conclave
Primary hazard	Acoustic Overload
Signature resource	Acoustic Crystal
MysteryZone	False
Continent	CONT_ASHARA
Region	Ashara — Underground (Central)
Elevation_m	-500
Status	LIVE_CANON
Source	LIVE/DATA/biome_registry_v5.7.4.json

Ground

A subterranean biome where the air is thick with mystery and every sound echoes in perfect preservation for hours. The cavern system was formed by a single massive water flow event. The acoustic properties have created a unique evolutionary pressure on local fauna.

Settlements

Name	Type	Population	Controlling faction
Cavern Settlement	Faction Outpost	1500	F12 Soulglass Circle
Acoustic Hollow	secondary	N/A	F12 Soulglass Circle
Echo Chamber	primary	N/A	F12 Soulglass Circle

Settlement pages: Acoustic Hollow, Cavern Settlement, Echo Chamber. Settlement rows on the faction civilization table for this biome also have pages: Echo Listener Post. All settlements: Settlements.

Factions present

Faction	Where recorded
F12 Soulglass Circle	Starting control. Controlling faction on every recorded settlement row. All seven NPC rows.
F10 Nightroot Conclave	Contested. The faction table gives it a foothold here.

The faction named as starting control in the header holds the biome at the start. Control can change during play, and quests follow whoever controls the biome at the time. The faction table also gives F10 Nightroot Conclave a foothold here, so the biome is contested.

Resources

Full table with IDs and node details: B068 Cavern of Echoes/Resources.

• Cave Crystal (Caver) (GATHERABLE, Common)
• Cavern Stone (GATHERABLE, Common)
• Cavern Gloomfungus Cap (GATHERABLE, Rare)
• Cavern Nightroot Extract (GATHERABLE, Common)
• Darkness Ore (Caver) (GATHERABLE, Common)
• Memory Moss (Caver) (GATHERABLE, Common)
• Refined Cavern Clay (GATHERABLE, Uncommon)
• Refined Cavern Stone (GATHERABLE, Common)
• Refined Gloomfungus Cap (GATHERABLE, Uncommon)
• Refined Shadow Resin (GATHERABLE, Uncommon)
• Sporecap Fiber (Caver) (GATHERABLE, Common)

Signature, primary, secondary, and minerals

These rows are recorded on the B068 resource table and were not in the gatherable list above.

ID	Name	Type	Rarity
SIG-068	Acoustic Crystal	SIGNATURE	Rare–Legendary
PRI-068	Echo Stone	PRIMARY	Uncommon–Rare
SEC-068	Cavern Resin	SECONDARY	Common–Uncommon
MIN-COM-ECH	Echite	Common Mineral	Common
MIN-COM-ACO	Acoustic Ore	Common Mineral	Common
MIN-COM-CAV	Cavern	Common Mineral	Common
MIN-RARE-ECH	Echo Crystal	Rare Mineral	Rare
MIN-RARE-ACO	Acoustic Glass	Rare Mineral	Rare

Harvest

The harvestable index records counts for biome 068 only: flora 4, ore 3, trees 3, total 10. That index does not name the rows, so those counts are not assigned to names here.

Named flora recorded for Cavern of Echoes:

ID	Name	Harvestable
FLORA-NIGH-068	Nightroot	Yes
FLORA-CAVE-068	Cavemoss	Yes
FLORA-SPOR-068	Sporeshade Mycelium	No
FLORA-CAVE-068	Cave Luminweed	No
FLORA-BLIN-068	Blind Root	No — Protected
FLORA-FUNG-068	Fungal Shelf	No
FLORA-ROOT-068	Root Siphon	No — Protected
FLORA-CAVE-068	Cave Spore Ball	No

Two named flora rows are marked harvestable. That does not match the harvestable index count of 4. Duplicate flora ids are left as separate recorded rows. Both figures are left as recorded. The ecological-role cell says PROTECTED SPECIES on Sporeshade Mycelium, Cave Luminweed, Blind Root, Fungal Shelf, Root Siphon, and Cave Spore Ball. The harvestable cell says No on Sporeshade Mycelium, Cave Luminweed, Fungal Shelf, and Cave Spore Ball and No — Protected on Blind Root and Root Siphon. Both wordings are left as recorded.

Not recorded: a named tree list, and a named ore list that matches the index counts of 3 and 3.

Deep zone

Field	Value
Deep zone	Deep Cavern — Deep Echo
Layout	Mycelial Tunnel Network
Max players	6
Lockout hours	72
Boss name	Echowatcher — Deep Form
Ground note	The Deep Echo has never been accessible to surface explorers. The Deep Zone system reveals what the biome contains at its most dangerous depth.

Boss

Field	Value
Boss	Echowatcher, Ancient of Biome 068
Difficulty	T3_Heroic
Recommended party	4
Damage type	Fire
Arena	Echo Chamber
Arena description	The boss encounter takes place in the heart of Cavern of Echoes's most extreme terrain feature. The arena is shaped by subsurface cavern conditions — no neutral ground exists. In 0.68g, player jump arcs extend 47% further than Earth-equivalent, and boss knockback sends players 35% further than expected.
Arena size (m)	116
Arena terrain	Acoustic overload echo cavern
Arena hazard	Acoustic Overload
Unique material	Spore Scale
Ground blurb	The Spore Prowler the Ancient is the apex expression of Cavern of Echoes's ecosystem — a creature that has been shaped by subsurface cavern conditions across centuries of adaptation in 0.68g. It is not simply dangerous. It is what Cavern of Echoes would be if the biome could choose to fight.

Weather

The atmosphere row records weather patterns Cavern Wind and Echo Rain. Those two names are not rows in the weather table. Six weather rows are recorded for this biome.

ID	Name	Code	Recorded effect
WX-068-STORM	Storm	STORM	Severe visibility reduction. Player movement restricted. Pack predators shelter. Ambush predators peak activity.
WX-068-ASH	Ashfall	ASH	Reduces visibility. Ash-adapted creatures +15% aggro. Node guardian activity increases. Acoustic Crystal harvest modified.
WX-068-SNOW	Cold Event	SNOW	Winter only. Fauna density minimum. Node guardians reduced patrol. Resource yield -20% all types.
WX-068-ANY	Any Weather	ANY	Weather-independent spawn — present in all conditions.
WX-068-RAIN	Rain/Mist	RAIN	Rare moisture event. Suppresses primary hazard temporarily. Most comfortable traversal conditions.
WX-068-CLEAR	Clear Sky	CLEAR	Maximum K3V amber light. Visibility maximum. Best navigation conditions. Standard resource yields.

Spawn entries recorded on those rows: Storm 19, Ashfall 8, Cold Event 9, Any Weather 7, Rain/Mist 13, Clear Sky 14. Night-multiplier entries above 2.0 recorded on those rows: Storm 6, Ashfall 1, Cold Event 1, Any Weather 0, Rain/Mist 2, Clear Sky 3.

Mobs

Seven named mobs are recorded. One further row records 63 additional spawn-table entries that are not named. Those 63 are not listed as species here. That summary row records 14 corrupted variants and 0 event overrides. Its weather distribution cells are all zero. Echowatcher has archetype Node Guardian but the node-guardian cell reads False. Both are left as recorded.

ID	Name	Archetype	HP	Creature ID	Node guardian
MOB-068-01	Cavernhorn	Large Herbivore	148	CR04691	False
MOB-068-02	Echoscale	Swift Scout	72	CR04692	False
MOB-068-03	Rockmane	Pack Predator	100	CR04693	False
MOB-068-04	Cavernstalker	Ambush Predator	105	CR04694	False
MOB-068-05	Echofang	Elemental Creature	116	CR04695	False
MOB-068-06	Caverncoil	Scavenger	103	CR04696	False
MOB-068-07	Echowatcher	Node Guardian	152	CR04697	False

Nodes

Ten network nodes are recorded. Four are positive and six are negative. The node profile records dominant NEGATIVE, density high, base respawn 96 minutes, and modifier 1.60x.

ID	Name	Type	Location	Signature resource growth	Guardian
NODE_068_P01	Cavern Primary Anchor	POSITIVE	Located at the summit of the primary terrain feature, where K3V light exposure is maximum. Within the Echo Chamber zone.	No	None
NODE_068_P02	Cavern Light Node 2	POSITIVE	Located within the main resource cluster, feeding crystal growth. Within the Acoustic Hollow zone.	No	None
NODE_068_P03	Cavern Light Node 3	POSITIVE	Located at the convergence of the two largest named locations. Within the Acoustic Hollow zone.	No	None
NODE_068_P04	Cavern Light Node 4	POSITIVE	Located near the biome's primary water source or geological anchor. Within the Acoustic Hollow zone.	No	None
NODE_068_N01	Cavern Void Node 1	NEGATIVE	Located in the deepest depression of the biome's terrain, where void energy pools. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_068_N02	Cavern Void Node 2	NEGATIVE	Located at the most hazardous point of the primary hazard zone. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_068_N03	Cavern Void Node 3	NEGATIVE	Located beneath the primary ambush predator territory centre. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_068_N04	Cavern Void Node 4	NEGATIVE	Located at the outer boundary of the biome, where it transitions to adjacent terrain. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_068_N05	Cavern Void Node 5	NEGATIVE	Located within the node guardian's primary patrol circuit centre. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_068_N06	Cavern Void Node 6	NEGATIVE	Located at the lowest point of any geological feature — voids sink. The primary hazard (Acoustic Overload) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present

The node-network file records a guardian name string on each of these ten nodes. Those strings are not rows in the named mob list above. The biome file, used in this table, records no guardian on the four positive nodes and a guardian present on the six negative nodes. Both records are left as recorded.

World events

Three world events are recorded. Where the duration cell and the notes cell disagree, both figures are left as recorded. The biome-pack names and the world-event master names disagree. Both name sets are left as recorded.

ID	Biome-pack name	Master name	Type	Duration cell	Cooldown cell	Broadcast	Trigger	Notes duration
WE0377	Echo Season	Cavern of Ec Environmental Event	Environmental	15min	12hr	FALSE	PLAYER_COUNT	45-90 minutes real-time
WE0378	Cavern Bloom	Cavern of Ec Resource Event	Resource	30min	12hr	FALSE	RANDOM	30 minutes real-time
WE0204	Echo Storm	Cavern of Ec Major Transformation Event	Major Transformation	0min	0hr	TRUE	WEATHER	3-8 hours real-time

WE0377 notes: Acoustic Crystal nodes restricted, hazard blocks access during the event. Resource bonus on that row is FALSE. Affects territory is FALSE. Spawn override on that row is NODE_GUARDIAN_ELITE. WE0378 notes: Acoustic Crystal nodes surge, triple yield during the event. Resource bonus on that row is TRUE. Affects territory is FALSE. WE0204 notes: Acoustic Crystal nodes restricted, hazard blocks access during the event. Resource bonus on that row is FALSE. Affects territory is TRUE. Spawn override on that row is NODE_GUARDIAN_ELITE. Biome state change recorded as Cavern of Echoes_STATE_ALTERED.

Quests

Nine quests are recorded for this biome. Listed as id, title, layer, and giver id only. No quest prose is added here.

• Q0604 The Cavern Toll — Main — giver NPC0470
• Q0605 Cavern Watch — Surface — giver NPC0470
• Q0606 Cavern Vault Count — Underground — giver NPC0475
• Q0607 The Drip-Well Static — Cavern of Echoes — Aquatic — giver NPC0473
• Q0608 Acoustic Crystal for the Cogmist Engineers — Main — giver NPC0470
• Q0609 Overload Season — Cavern of Echoes — Surface — giver NPC0472
• Q0610 What the Cavern Vault Hums — Underground — giver NPC0473
• Q0611 After the Drip-Well Draw — Cavern of Echoes — Aquatic — giver NPC0475
• Q0612 Cogmist Engineers on the Cavern Line — Main — giver NPC0470

Favor

Cavern of Echoes has its own favor track. It is separate from faction reputation and does not change the ending.

• Biome-line quests: 9. Each one gives +10 favor.
• Finish all 9 to become Favored here (+20 bonus). Highest favor: 110.
• Chain order: Q0604 → Q0605 → Q0606 → Q0607 → Q0608 → Q0609 → Q0610 → Q0611 → Q0612.
• Favor is lost: −5 for each quest done for F10 Nightroot Conclave outside this biome. That faction contests this biome. Quests in this biome never cost favor here.
• Skipping quests gives no favor.

NPCs

Seven NPCs are recorded with location Cavern of Echoes. Sex, age, items held, kinship, and the quests-given cell are blank on those rows. Quest giver ids above come from the quest table, not from the quests-given cell.

NPC ID	Name	Role	Settlement	Faction
NPC0470	Oswyn Cindermere	quest_giver	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0471	Corra Emberfall	merchant	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0472	Corra Gloomreach	trainer	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0473	Corvus Ironveil	lore_keeper	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0474	Brix Klarenfield	blacksmith	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0475	Tova Mirewood	quest_giver	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle
NPC0476	Ulric Obsidianwatch	merchant	Echo Chamber, Cavern of Echoes	F12 Soulglass Circle

Items

Sixteen crafted items are recorded for Cavern of Echoes. All are crafted at Echo Forge. The item table records Acoustic Crystal as the primary material on every row.

Item ID	Name	Type	Slot	Rarity	Primary material
B068_WPN_01	Cavern Acoustic Edge	Weapon	Weapon	Rare	Acoustic Crystal
B068_HLM_01	Acoustic Ward Helm	Armor	Helm	Uncommon	Acoustic Crystal
B068_CHS_01	Acoustic Breastplate	Armor	Chest	Rare	Acoustic Crystal
B068_HND_01	Cavern Grips	Armor	Hands	Uncommon	Acoustic Crystal
B068_LEG_01	Cavern Greaves	Armor	Legs	Uncommon	Acoustic Crystal
B068_FET_01	Cavern Treads	Armor	Feet	Uncommon	Acoustic Crystal
B068_TRK_01	Acoustic Relic	Trinket	Necklace	Rare	Acoustic Crystal
B068_REL_01	Cavern First-Stone	Trinket	Relic	Epic	Acoustic Crystal
B068_CON_01	Cavern Draught	Consumable		Common	Acoustic Crystal
B068_SAL_01	Cavern Salve	Consumable		Uncommon	Acoustic Crystal
B068_MAT_01	Refined Cavern Grit	Material		Common	Acoustic Crystal
B068_BAR_01	Acoustic Ingot	Material		Rare	Acoustic Crystal
B068_TOL_01	Cavern Node Pick	Tool	Tool	Uncommon	Acoustic Crystal
B068_KIT_01	Cavern Field Kit	Tool	Tool	Uncommon	Acoustic Crystal
B068_UPG_01	Acoustic Catalyst	Upgrade Component		Rare	Acoustic Crystal
B068_FOC_01	Cavern Focus	Weapon	Off-Hand	Uncommon	Acoustic Crystal

Recipes

Sixteen recipes are recorded, one for each item above. Output quantity is 1. The third material cell is blank on every row, so no third material is listed. Recipe unlock cells use T1 Known, T2 Trusted, T3 Honoured, and T4 Honoured. The faction reputation row names those bands T1 Neutral, T2 Friendly, T3 Honoured, and T4 Revered. Both wordings are left as recorded.

Recipe ID	Output	Workstation	Materials	Unlock reputation
RCP_B068_WPN_01	Cavern Acoustic Edge	Echo Forge	Acoustic Crystal x9; Refined Cavern Grit x1	T3 Honoured
RCP_B068_HLM_01	Acoustic Ward Helm	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_CHS_01	Acoustic Breastplate	Echo Forge	Acoustic Crystal x9; Refined Cavern Grit x1	T3 Honoured
RCP_B068_HND_01	Cavern Grips	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_LEG_01	Cavern Greaves	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_FET_01	Cavern Treads	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_TRK_01	Acoustic Relic	Echo Forge	Acoustic Crystal x9; Refined Cavern Grit x1	T3 Honoured
RCP_B068_REL_01	Cavern First-Stone	Echo Forge	Acoustic Crystal x11; Refined Cavern Grit x1	T4 Honoured
RCP_B068_CON_01	Cavern Draught	Echo Forge	Acoustic Crystal x5; Refined Cavern Grit x1	T1 Known
RCP_B068_SAL_01	Cavern Salve	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_MAT_01	Refined Cavern Grit	Echo Forge	Acoustic Crystal x5; Refined Cavern Grit x1	T1 Known
RCP_B068_BAR_01	Acoustic Ingot	Echo Forge	Acoustic Crystal x9; Refined Cavern Grit x1	T3 Honoured
RCP_B068_TOL_01	Cavern Node Pick	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_KIT_01	Cavern Field Kit	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted
RCP_B068_UPG_01	Acoustic Catalyst	Echo Forge	Acoustic Crystal x9; Refined Cavern Grit x1	T3 Honoured
RCP_B068_FOC_01	Cavern Focus	Echo Forge	Acoustic Crystal x7; Refined Cavern Grit x1	T2 Trusted

Image prompt

Text only. No file is uploaded. The prompt below is the recorded overview prompt for B068, followed by the ground description and settlement names already on this page.

Recorded overview prompt: ABERNON game concept art, Biome 068 Cavern of Echoes, K3V amber light, subsurface_cavern environment, 0.68g low gravity, Soulglass Circle faction territory, AAA game quality, cinematic painterly, panoramic establishing shot, biome landscape at K3V amber light, faction settlement visible, atmosphere establishes biome identity.

Detailed prompt for an image creator: Painterly cinematic establishing shot of Cavern of Echoes, biome 068, subsurface cavern, under K3V amber light at 0.68g. A subterranean biome where the air is thick with mystery and every sound echoes in perfect preservation for hours. The cavern system was formed by a single massive water flow event. The acoustic properties have created a unique evolutionary pressure on local fauna. Terrain recorded as acoustic overload echo cavern. Underground networks stretch for kilometers. Fungal light. Memory-altering spores. Sounds travel wrong. Acoustic Overload is the recorded primary hazard. Acoustic Crystal is the signature resource. Recorded colour palette: cave black, phosphore. The Soulglass Circle settlement Cavern Settlement is visible, with Acoustic Hollow and Echo Chamber in the same territory. AAA game concept art, faction territory readable in the architecture, no text in the image.

The image-prompt table also records twenty ungenerated prompts, IMG01341 through IMG01360. Each uses this recorded stem, with the type name in place of the scene type: AAA game concept art, Cavern of Echoes, subsurface cavern biome, [type], fungal light, cavern depth, memory-haze atmosphere, Acoustic Overload environmental hazard visible, Unreal Engine 5 quality, painterly, cinematic lighting, amber K3V star palette, alien yet familiar world aesthetic.

ID	Type	Status
IMG01341	hero_landscape	UNGENERATED
IMG01342	apex_creature	UNGENERATED
IMG01343	weather_event	UNGENERATED
IMG01344	flora_closeup	UNGENERATED
IMG01345	faction_outpost	UNGENERATED
IMG01346	loading_screen	UNGENERATED
IMG01347	ambient_day	UNGENERATED
IMG01348	ambient_night	UNGENERATED
IMG01349	energy_node	UNGENERATED
IMG01350	hazard_event	UNGENERATED
IMG01351	npc_portrait	UNGENERATED
IMG01352	creature_combat	UNGENERATED
IMG01353	resource_gather	UNGENERATED
IMG01354	world_event	UNGENERATED
IMG01355	sky_atmosphere	UNGENERATED
IMG01356	underground_entrance	UNGENERATED
IMG01357	coastal_view	UNGENERATED
IMG01358	mystery_fragment	UNGENERATED
IMG01359	faction_landmark	UNGENERATED
IMG01360	player_action	UNGENERATED

Canonical URL: https://wiki.abernon.com/index.php?title=B068_Cavern_of_Echoes