Originally posted by Mr. X:

IDS:
BossStone_Bonemass
BossStone_DragonQueen
BossStone_Eikthyr
BossStone_TheElder
BossStone_Yagluth

see: https://valheim.fandom.com/wiki/Item_IDs#Other

Those appear to be the codes for spawning the trophy stones at world spawn for each boss, not the actual boss summoning altars. Sorry for the confusion, I should have been clearer. Would you happen to know what the codes are for the boss summoning altars?

Originally posted by Jaggid Edje:

Have you checked this site[valheim-modding.github.io]? It has yet to fail to produce results for similar questions for me.

I checked it out, but I had a hard time finding the codes for the summoning altars for each boss. Any ideas?
Also, I played around with several of the codes but I was unable to spawn several structures (such as drake nests, stonehenges, etc.). How would I go about spawning such structures?

Just from looking, my assumption is that the boss altars are a combination of _eventzone_boss_base plus the ones already mentioned. If you look at the prefab list at that link, both of those consist of multiple components. If you only got the trophy stones, you aren't doing what is required to generate all of the components. (Which would be out of my capacity as well at this time).

Originally posted by Jaggid Edje:

Just from looking, my assumption is that the boss altars are a combination of _eventzone_boss_base plus the ones already mentioned. If you look at the prefab list at that link, both of those consist of multiple components. If you only got the trophy stones, you aren't doing what is required to generate all of the components. (Which would be out of my capacity as well at this time).

I have no idea how I'd go about that.

Originally posted by Rumpleforeskin:

Originally posted by Jaggid Edje:

Have you checked this site[valheim-modding.github.io]? It has yet to fail to produce results for similar questions for me.

I checked it out, but I had a hard time finding the codes for the summoning altars for each boss. Any ideas?
Also, I played around with several of the codes but I was unable to spawn several structures (such as drake nests, stonehenges, etc.). How would I go about spawning such structures?

I think they go by the name of whatever is used to offer to the altar. There's goblinking_totemholder and dragoneggcup, dunno about the others...

Err, I guess dragoneggcup might be just the thing that holds it in place in the nest, no idea lol

Originally posted by Jaggid Edje:

Just from looking, my assumption is that the boss altars are a combination of _eventzone_boss_base

Those seem to be about the special effects which are applied when the boss makes appearance?

Originally posted by Rhapsody:

Originally posted by Rumpleforeskin:

I checked it out, but I had a hard time finding the codes for the summoning altars for each boss. Any ideas?
Also, I played around with several of the codes but I was unable to spawn several structures (such as drake nests, stonehenges, etc.). How would I go about spawning such structures?

I think they go by the name of whatever is used to offer to the altar. There's goblinking_totemholder and dragoneggcup, dunno about the others...

Err, I guess dragoneggcup might be just the thing that holds it in place in the nest, no idea lol

Originally posted by Jaggid Edje:

Just from looking, my assumption is that the boss altars are a combination of _eventzone_boss_base

Those seem to be about the special effects which are applied when the boss makes appearance?

I tested dragoneggcup in-game, it spawned one of the holders (albeit invisible) for Dragon Eggs used at the alter to summon Moder, but not the actual alter itself :(
I haven't tested goblinking_totemholder yet, but I imagine that's just the pedestal on which one can find totems for Yagruth. I'll have to test it later.

The totem pole things are separate, I think.

I guess there's a decent chance that the boss altars are constructed of many pieces with textures being drawn over them to distinguish Moder and Yagluth altars. Elder's altar structure probably consists of many objects as well. But it seems weird that altar of Biomass or nothing related cannot be found on the list... or at least I can't find anything like that.

Originally posted by Rhapsody:

The totem pole things are separate, I think.

I guess there's a decent chance that the boss altars are constructed of many pieces with textures being drawn over them to distinguish Moder and Yagluth altars. Elder's altar structure probably consists of many objects as well. But it seems weird that altar of Biomass or nothing related cannot be found on the list... or at least I can't find anything like that.

Yeah, I couldn't either. I presumed they were unique structures because they cannot be destroyed. I know it's possible to spawn some structures that cannot be destroyed (like statues), but I can't seem to figure out how to spawn things like boss alters or drake nests.

Have you checked this site[valheim-modding.github.io]? It has yet to fail to produce results for similar questions for me.

IDS:
BossStone_Bonemass
BossStone_DragonQueen
BossStone_Eikthyr
BossStone_TheElder
BossStone_Yagluth

see: https://valheim.fandom.com/wiki/Item_IDs#Other

Thank you! I will test these out