B021 Frostthorn Caldera

B021 Frostthorn Caldera

Field	Value
BiomeID	021
Biome name	Frostthorn Caldera
Climate	POLAR_GLACIAL
Difficulty	8
Starting control	F08 Frosthold Vigil
Primary hazard	Thermal Shock
Signature resource	Thermal Amber
MysteryZone	False
Continent	CONT_FROSTMERE
Region	Frostmere — Eastern Rim
Elevation_m	1500
Status	LIVE_CANON
Source	LIVE/DATA/biome_registry_v5.7.4.json

Ground

A glacial sink of frozen thorns and thermal ruptures where fire sleeps beneath frost. The caldera floor alternates between freezing marsh and sudden steam vents. Creatures have evolved thermal regulation bypasses and live at the transition zones.

Settlements

Name	Type	Population	Controlling faction
Frostthorn Settlement	Faction Outpost	1500	F08 Frosthold Vigil
Frost Thorn Fields	primary	N/A	F08 Frosthold Vigil
Steam Vent Hollow	secondary	N/A	F08 Frosthold Vigil

Settlement pages: Frost Thorn Fields, Frostthorn Settlement, Steam Vent Hollow. All settlements: Settlements.

Factions present

Faction	Where recorded
F08 Frosthold Vigil	Home faction of this biome. Controlling faction on every recorded settlement row. All seven NPC rows.

No other faction is recorded on a Frostthorn Caldera NPC row or settlement row.

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.

Resources

Full table with IDs and node details: B021 Frostthorn Caldera/Resources.

• Ancient Glacier Shard (Frost) (GATHERABLE, Rare)
• Blizzard Ore (Frost) (GATHERABLE, Common)
• Frostfall Crystal (Frost) (GATHERABLE, Rare)
• Frostt Glacial Core (GATHERABLE, Common)
• Frostt Ice Resin (GATHERABLE, Epic)
• Frostt Permafrost Stone (GATHERABLE, Common)
• Refined Glacial Core (GATHERABLE, Common)
• Refined Glacial Salt (GATHERABLE, Common)
• Refined Permafrost Stone (GATHERABLE, Common)
• Refined Tundra Core (GATHERABLE, Rare)
• Void Ice (Frost) (GATHERABLE, Common)

Signature, primary, secondary, and minerals

These rows are recorded on the B021 resource table and were not in the gatherable list above.

ID	Name	Type	Rarity
SIG-021	Thermal Amber	SIGNATURE	Rare–Legendary
PRI-021	Frost Thorn Crystal	PRIMARY	Uncommon–Rare
SEC-021	Caldera Resin	SECONDARY	Common–Uncommon
MIN-COM-ICE	Ice Ore	Common Mineral	Common
MIN-COM-FRO	Frostite	Common Mineral	Common
MIN-COM-THE	Thermal Stone	Common Mineral	Common
MIN-RARE-FRO	Frost Crystal	Rare Mineral	Rare
MIN-RARE-CAL	Caldera Glass	Rare Mineral	Rare

Harvest

The harvestable index records counts for biome 021 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 Frostthorn Caldera:

ID	Name	Harvestable
FLORA-ICEW-021	Icewort	Yes
FLORA-GLAC-021	Glacialbloom	Yes
FLORA-ICE -021	Ice Crystal Moss	No
FLORA-BLIG-021	Blight Lichen	No
FLORA-GLAC-021	Glacial Spore	No
FLORA-FROS-021	Frost Crystal Plant	No
FLORA-CAVE-021	Cave Liverwort	No
FLORA-ICE -021	Ice Algae	Yes

Three 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 Ice Crystal Moss, Blight Lichen, Glacial Spore, Frost Crystal Plant, and Cave Liverwort.

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 Frostthorn — Caldera Ice Base
Layout	Ice Cave Run
Max players	6
Lockout hours	72
Boss name	Icefang — Deep Form
Ground note	The Caldera Ice Base 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	Icefang, Ancient of Biome 021
Difficulty	T3_Heroic
Recommended party	4
Damage type	Physical
Arena	Frost Thorn Fields
Arena description	The boss encounter takes place in the heart of Frostthorn Caldera's most extreme terrain feature. The arena is shaped by polar glacial 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)	124
Arena terrain	Thermal shock caldera
Arena hazard	Thermal Shock
Unique material	Arctic Scale
Ground blurb	The Arctic Prowler the Ancient is the apex expression of Frostthorn Caldera's ecosystem — a creature that has been shaped by polar glacial conditions across centuries of adaptation in 0.68g. It is not simply dangerous. It is what Frostthorn Caldera would be if the biome could choose to fight.

Weather

The atmosphere row records weather patterns Frost Wind, Thermal Storm, and Ice. Those three names are not rows in the weather table. Six weather rows are recorded for this biome.

ID	Name	Code	Recorded effect
WX-021-STORM	Storm	STORM	Severe visibility reduction. Player movement restricted. Pack predators shelter. Ambush predators peak activity.
WX-021-ASH	Ashfall	ASH	Reduces visibility. Ash-adapted creatures +15% aggro. Node guardian activity increases. Thermal Amber harvest modified.
WX-021-SNOW	Cold Event	SNOW	Winter only. Fauna density minimum. Node guardians reduced patrol. Resource yield -20% all types.
WX-021-ANY	Any Weather	ANY	Weather-independent spawn — present in all conditions.
WX-021-RAIN	Rain/Mist	RAIN	Rare moisture event. Suppresses primary hazard temporarily. Most comfortable traversal conditions.
WX-021-CLEAR	Clear Sky	CLEAR	Maximum K3V amber light. Visibility maximum. Best navigation conditions. Standard resource yields.

Spawn entries recorded on those rows: Storm 11, Ashfall 11, Cold Event 11, Any Weather 12, Rain/Mist 7, Clear Sky 18. Night-multiplier entries above 2.0 recorded on those rows: Storm 2, Ashfall 2, Cold Event 2, Any Weather 3, Rain/Mist 2, Clear Sky 0.

Mobs

Eight named mobs are recorded. One further row records 62 additional spawn-table entries that are not named. Those 62 are not listed as species here. That summary row records 15 corrupted variants and 0 event overrides. Its weather distribution cells are all zero.

ID	Name	Archetype	HP	Creature ID	Node guardian
MOB-021-01	Frosthorn	Large Herbivore	111	CR01401	False
MOB-021-02	Glacialmane	Swift Scout	63	CR01402	False
MOB-021-03	Iceclaw	Pack Predator	76	CR01403	False
MOB-021-04	Frostscale	Ambush Predator	70	CR01404	False
MOB-021-05	Glacialstalker	Elemental Creature	80	CR01405	False
MOB-021-06	Icefang	Ancient Walker	157	CR01406	False
MOB-021-07	Frostwatcher	Scavenger	81	CR01407	False
MOB-021-08	Glacialcoil	Node Guardian	122	CR01408	True

Nodes

Eight network nodes are recorded. Two are positive and six are negative. The node profile records dominant NEGATIVE, density low, base respawn 420 minutes, and modifier 1.75x.

ID	Name	Type	Location	Signature resource growth	Guardian
NODE_021_P01	Frostthorn Primary Anchor	POSITIVE	Located at the summit of the primary terrain feature, where K3V light exposure is maximum. Within the Frost Thorn Fields zone.	No	None
NODE_021_P02	Frostthorn Light Node 2	POSITIVE	Located within the main resource cluster, feeding crystal growth. Within the Steam Vent Hollow zone.	No	None
NODE_021_N01	Frostthorn Void Node 1	NEGATIVE	Located in the deepest depression of the biome's terrain, where void energy pools. The primary hazard (Thermal Shock) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_021_N02	Frostthorn Void Node 2	NEGATIVE	Located at the most hazardous point of the primary hazard zone. The primary hazard (Thermal Shock) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_021_N03	Frostthorn Void Node 3	NEGATIVE	Located beneath the primary ambush predator territory centre. The primary hazard (Thermal Shock) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_021_N04	Frostthorn Void Node 4	NEGATIVE	Located at the outer boundary of the biome, where it transitions to adjacent terrain. The primary hazard (Thermal Shock) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_021_N05	Frostthorn Void Node 5	NEGATIVE	Located within the node guardian's primary patrol circuit centre. The primary hazard (Thermal Shock) is most intense within 20m of this node.	Yes — unresolved token {sig_res} within 40m	Present
NODE_021_N06	Frostthorn Void Node 6	NEGATIVE	Located at the lowest point of any geological feature — voids sink. The primary hazard (Thermal Shock) 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 eight nodes. Those strings are not rows in the named mob list above. The biome file, used in this table, records no guardian on the two 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
WE0317	Caldera Surge Season	Frostthorn C Environmental Event	Environmental	15min	24hr	FALSE	PLAYER_COUNT	45-90 minutes real-time
WE0318	Frost Bloom	Frostthorn C Resource Event	Resource	120min	12hr	FALSE	WEATHER	30 minutes real-time
WE0319	Thermal Rupture	Frostthorn C Major Transformation Event	Major Transformation	0min	0hr	TRUE	WORLD_STATE	3-8 hours real-time

WE0317 notes: Thermal Amber 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 ANCIENT_WALKER. WE0318 notes: Thermal Amber nodes surge, triple yield during the event. Resource bonus on that row is TRUE. Affects territory is FALSE. Spawn override on that row is ANCIENT_WALKER. WE0319 notes: Thermal Amber 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 Frostthorn Caldera_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.

• Q0181 The Frostthorn Toll — Main — giver NPC0141
• Q0182 Frostthorn Watch — Surface — giver NPC0141
• Q0183 Frostthorn Vault Count — Underground — giver NPC0146
• Q0184 The Ice-Well Fracture — Frostthorn Caldera — Aquatic — giver NPC0144
• Q0185 Thermal Amber for the Cinderwarden — Main — giver NPC0141
• Q0186 Shock Season — Surface — giver NPC0143
• Q0187 What the Frostthorn Vault Hums — Underground — giver NPC0144
• Q0188 After the Ice-Well Draw — Frostthorn Caldera — Aquatic — giver NPC0146
• Q0189 Cinderwarden on the Frostthorn Line — Main — giver NPC0141

Favor

Frostthorn Caldera 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: Q0181 → Q0182 → Q0183 → Q0184 → Q0185 → Q0186 → Q0187 → Q0188 → Q0189.
• No faction contests this biome, so favor here is never lost.
• Skipping quests gives no favor.

NPCs

Seven NPCs are recorded with location Frostthorn Caldera. Sex, age, items held, and the quests-given cell are blank on those rows. Kinship is blank except where the table records it. Quest giver ids above come from the quest table, not from the quests-given cell.

NPC ID	Name	Role	Settlement	Faction	Kinship
NPC0141	Brix Lumenbrook	quest_giver	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil	Extended Lumenbrook family with historical Lyra NPC0505, Aldric Lumenbrook NPC0114, present-day Lyra NPC0724, Gorath Lumenbrook NPC0006, and Tova Lumenbrook NPC0323.
NPC0142	Corra Nightfall	merchant	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil
NPC0143	Ashan Prismholt	trainer	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil
NPC0144	Enna Riftvale	lore_keeper	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil
NPC0145	Fyren Thornwick	blacksmith	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil
NPC0146	Gael Voidwatch	quest_giver	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil
NPC0147	Holt Xenstone	merchant	Frost Thorn Fields, Frostthorn Caldera	F08 Frosthold Vigil

Items

Sixteen crafted items are recorded for Frostthorn Caldera. All are crafted at Frost Forge. The item table records Thermal Amber as the primary material on every row.

Item ID	Name	Type	Slot	Rarity	Primary material
B021_WPN_01	Frostthorn Thermal Edge	Weapon	Weapon	Rare	Thermal Amber
B021_HLM_01	Thermal Ward Helm	Armor	Helm	Uncommon	Thermal Amber
B021_CHS_01	Thermal Breastplate	Armor	Chest	Rare	Thermal Amber
B021_HND_01	Frostthorn Grips	Armor	Hands	Uncommon	Thermal Amber
B021_LEG_01	Frostthorn Greaves	Armor	Legs	Uncommon	Thermal Amber
B021_FET_01	Frostthorn Treads	Armor	Feet	Uncommon	Thermal Amber
B021_TRK_01	Thermal Relic	Trinket	Necklace	Rare	Thermal Amber
B021_REL_01	Frostthorn First-Stone	Trinket	Relic	Epic	Thermal Amber
B021_CON_01	Frostthorn Draught	Consumable		Common	Thermal Amber
B021_SAL_01	Frostthorn Salve	Consumable		Uncommon	Thermal Amber
B021_MAT_01	Refined Frostthorn Grit	Material		Common	Thermal Amber
B021_BAR_01	Thermal Ingot	Material		Rare	Thermal Amber
B021_TOL_01	Frostthorn Node Pick	Tool	Tool	Uncommon	Thermal Amber
B021_KIT_01	Frostthorn Field Kit	Tool	Tool	Uncommon	Thermal Amber
B021_UPG_01	Thermal Catalyst	Upgrade Component		Rare	Thermal Amber
B021_FOC_01	Frostthorn Focus	Weapon	Off-Hand	Uncommon	Thermal Amber

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_B021_WPN_01	Frostthorn Thermal Edge	Frost Forge	Thermal Amber x9; Refined Frostthorn Grit x1	T3 Honoured
RCP_B021_HLM_01	Thermal Ward Helm	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_CHS_01	Thermal Breastplate	Frost Forge	Thermal Amber x9; Refined Frostthorn Grit x1	T3 Honoured
RCP_B021_HND_01	Frostthorn Grips	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_LEG_01	Frostthorn Greaves	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_FET_01	Frostthorn Treads	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_TRK_01	Thermal Relic	Frost Forge	Thermal Amber x9; Refined Frostthorn Grit x1	T3 Honoured
RCP_B021_REL_01	Frostthorn First-Stone	Frost Forge	Thermal Amber x11; Refined Frostthorn Grit x1	T4 Honoured
RCP_B021_CON_01	Frostthorn Draught	Frost Forge	Thermal Amber x5; Refined Frostthorn Grit x1	T1 Known
RCP_B021_SAL_01	Frostthorn Salve	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_MAT_01	Refined Frostthorn Grit	Frost Forge	Thermal Amber x5; Refined Frostthorn Grit x1	T1 Known
RCP_B021_BAR_01	Thermal Ingot	Frost Forge	Thermal Amber x9; Refined Frostthorn Grit x1	T3 Honoured
RCP_B021_TOL_01	Frostthorn Node Pick	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_KIT_01	Frostthorn Field Kit	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted
RCP_B021_UPG_01	Thermal Catalyst	Frost Forge	Thermal Amber x9; Refined Frostthorn Grit x1	T3 Honoured
RCP_B021_FOC_01	Frostthorn Focus	Frost Forge	Thermal Amber x7; Refined Frostthorn Grit x1	T2 Trusted

Image prompt

Text only. No file is uploaded. The prompt below is the recorded overview prompt for B021, followed by the ground description and settlement names already on this page.

Recorded overview prompt: ABERNON game concept art, Biome 021 Frostthorn Caldera, K3V amber light, polar_glacial environment, 0.68g low gravity, Frosthold Vigil 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 Frostthorn Caldera, biome 021, polar glacial, under K3V amber light at 0.68g. A glacial sink of frozen thorns and thermal ruptures where fire sleeps beneath frost. The caldera floor alternates between freezing marsh and sudden steam vents. Creatures have evolved thermal regulation bypasses and live at the transition zones. Terrain recorded as thermal shock caldera. Deep ice, ancient and slow-moving. Creatures here evolved over millions of years for the cold. Thermal Shock is the recorded primary hazard. Thermal Amber is the signature resource. Recorded colour palette: ice-blue, white, pale. The Frosthold Vigil settlement Frostthorn Settlement is visible, with Frost Thorn Fields and Steam Vent Hollow 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, IMG00401 through IMG00420. Each uses this recorded stem, with the type name in place of the scene type: AAA game concept art, Frostthorn Caldera, polar glacial biome, [type], ancient ice, void darkness, amber star distant, Thermal Shock environmental hazard visible, Unreal Engine 5 quality, painterly, cinematic lighting, amber K3V star palette, alien yet familiar world aesthetic.

ID	Type	Status
IMG00401	hero_landscape	UNGENERATED
IMG00402	apex_creature	UNGENERATED
IMG00403	weather_event	UNGENERATED
IMG00404	flora_closeup	UNGENERATED
IMG00405	faction_outpost	UNGENERATED
IMG00406	loading_screen	UNGENERATED
IMG00407	ambient_day	UNGENERATED
IMG00408	ambient_night	UNGENERATED
IMG00409	energy_node	UNGENERATED
IMG00410	hazard_event	UNGENERATED
IMG00411	npc_portrait	UNGENERATED
IMG00412	creature_combat	UNGENERATED
IMG00413	resource_gather	UNGENERATED
IMG00414	world_event	UNGENERATED
IMG00415	sky_atmosphere	UNGENERATED
IMG00416	underground_entrance	UNGENERATED
IMG00417	coastal_view	UNGENERATED
IMG00418	mystery_fragment	UNGENERATED
IMG00419	faction_landmark	UNGENERATED
IMG00420	player_action	UNGENERATED

Canonical URL: https://wiki.abernon.com/index.php?title=B021_Frostthorn_Caldera