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[johnny_cat]

I want to build a dwarf city in the mouth of an active volcano kind of like blackrock mountain from World of Warcraft. But I can't figure out how to get the world generator to create a volcano to build into. I'd also like to have a river nearby so I can create an obsidian farm. How can I do this?

[GaxkangtheUnbound]

I want to build a dwarf city in the mouth of an active volcano kind of like blackrock mountain from World of Warcraft. But I can't figure out how to get the world generator to create a volcano to build into. I'd also like to have a river nearby so I can create an obsidian farm. How can I do this?

Increase the amount of volcanoes using world gen. parameters.
Hit 'e' on the page, scroll down until you find 'Minimum Volcanoes'. Increase it as much as you want.

[Marthnn]

Last time I found an embark with both a volcano and a stream, it took 5X the usual time before loading, and then was all buggy, with HFS open to the sky, magma sea pouring into bottom-less chasms, the river somehow free-falling, and one heck of a slade mountain going straight up 300 z-lvls. Of course it was impossibly laggy, even on pause, and my 7 dwarfs had about 5 tiles to walk on, with maybe access to the remnants of a cavern.

The time before last, the game simply disappeared during embark.

Don't put too much hope on the volcano-river mix. Erosion tends to do it's work.

[NKDietrich]

I've had luck with the params below in .14 for getting volcanos with streams, rivers, sedimentary layers, and flux. It seems much easier than in .12, I think. Or perhaps I just changed something without realizing it. I even had an embark with a 48 tile wide river 5 tiles west and 2 z-levels down from a volcano. Though it didn't have any of the other amenities.

Spoiler (click to show/hide)

Created in DF v0.31.14.

[WORLD_GEN]
   [TITLE:LargeVolcanic1]
   [DIM:257:257]
   [EMBARK_POINTS:1274]
   [END_YEAR:250]
   [BEAST_END_YEAR:2:10]
   [REVEAL_ALL_HISTORY:1]
   [CULL_HISTORICAL_FIGURES:1]
   [ELEVATION:1:400:1600:1600]
   [RAINFALL:0:100:400:400]
   [TEMPERATURE:0:100:400:400]
   [DRAINAGE:0:100:400:400]
   [VOLCANISM:0:100:3200:3200]
   [SAVAGERY:0:100:400:400]
   [ELEVATION_FREQUENCY:1:1:1:1:1:1]
   [RAIN_FREQUENCY:1:1:1:1:1:1]
   [DRAINAGE_FREQUENCY:1:1:1:1:1:1]
   [TEMPERATURE_FREQUENCY:1:1:1:1:1:1]
   [SAVAGERY_FREQUENCY:1:1:1:1:1:1]
   [VOLCANISM_FREQUENCY:1:1:1:1:1:1]
   [MEGABEAST_CAP:75]
   [SEMIMEGABEAST_CAP:150]
   [TITAN_NUMBER:33]
   [TITAN_ATTACK_TRIGGER:80:0:100000]
   [DEMON_NUMBER:52]
   [GOOD_SQ_COUNTS:100:1000:2000]
   [EVIL_SQ_COUNTS:100:1000:2000]
   [PEAK_NUMBER_MIN:200]
   [PARTIAL_OCEAN_EDGE_MIN:0]
   [COMPLETE_OCEAN_EDGE_MIN:0]
   [VOLCANO_MIN:200]
   [REGION_COUNTS:SWAMP:1032:7:6]
   [REGION_COUNTS:DESERT:1032:7:6]
   [REGION_COUNTS:FOREST:4128:13:12]
   [REGION_COUNTS:MOUNTAINS:8256:9:9]
   [REGION_COUNTS:OCEAN:8256:7:6]
   [REGION_COUNTS:GLACIER:0:0:0]
   [REGION_COUNTS:TUNDRA:0:0:0]
   [REGION_COUNTS:GRASSLAND:8256:13:12]
   [REGION_COUNTS:HILLS:8256:13:12]
   [EROSION_CYCLE_COUNT:250]
   [RIVER_MINS:800:800]
   [PERIODICALLY_ERODE_EXTREMES:1]
   [OROGRAPHIC_PRECIPITATION:1]
   [SUBREGION_MAX:5000]
   [CAVERN_LAYER_COUNT:3]
   [CAVERN_LAYER_OPENNESS_MIN:100]
   [CAVERN_LAYER_OPENNESS_MAX:100]
   [CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
   [CAVERN_LAYER_PASSAGE_DENSITY_MAX:25]
   [CAVERN_LAYER_WATER_MIN:50]
   [CAVERN_LAYER_WATER_MAX:100]
   [HAVE_BOTTOM_LAYER_1:1]
   [HAVE_BOTTOM_LAYER_2:1]
   [LEVELS_ABOVE_GROUND:15]
   [LEVELS_ABOVE_LAYER_1:15]
   [LEVELS_ABOVE_LAYER_2:1]
   [LEVELS_ABOVE_LAYER_3:1]
   [LEVELS_ABOVE_LAYER_4:3]
   [LEVELS_ABOVE_LAYER_5:2]
   [LEVELS_AT_BOTTOM:1]
   [CAVE_MIN_SIZE:5]
   [CAVE_MIN_SIZE:5]
   [CAVE_MAX_SIZE:25]
   [MOUNTAIN_CAVE_MIN:100]
   [NON_MOUNTAIN_CAVE_MIN:200]
   [ALL_CAVES_VISIBLE:0]
   [SHOW_EMBARK_TUNNEL:2]
   [TOTAL_CIV_NUMBER:40]
   [TOTAL_CIV_POPULATION:15000]
   [SITE_CAP:1500]
   [PLAYABLE_CIVILIZATION_REQUIRED:1]
   [ELEVATION_RANGES:8256:16512:8256]
   [RAIN_RANGES:8256:16512:8256]
   [DRAINAGE_RANGES:8256:16512:8256]
   [SAVAGERY_RANGES:8256:16512:8256]
   [VOLCANISM_RANGES:8256:16512:8256]

[EddyP]

Last time I found an embark with both a volcano and a stream, it took 5X the usual time before loading, and then was all buggy, with HFS open to the sky, magma sea pouring into bottom-less chasms, the river somehow free-falling, and one heck of a slade mountain going straight up 300 z-lvls. Of course it was impossibly laggy, even on pause, and my 7 dwarfs had about 5 tiles to walk on, with maybe access to the remnants of a cavern.

The time before last, the game simply disappeared during embark.

Don't put too much hope on the volcano-river mix. Erosion tends to do it's work.

End the world gen after 200 years. Less erosion. I've got a sweet volcano/brook embark, with a nice flat area to dig on. Terrifying too

[johnny_cat]

I've already got a volcano with a river. And it's not buggy either. It's actually a perfect place to build a castle. There's haunted woodland below. But I've spent all night trying to figure out a plan for this map. It's got this really awesome cone shaped mountain like right next to the volcano so that there's a narrow valley in between the two. I wish I knew how to show you the map I'm trying to work with so you guys could give me some advice. I mean, it's an absolutely ideal map, but I suck at planning out cities.

[melomel]

Can't you also turn off erosion?

What you want is possible, btw.  Though sedimentary/sand layers are hard to get near a volcano, and you might have to settle for a stream/aquifer/underground water, unless you have the awesomest pc in the world and a lot of patience.

[FleshForge]

There is an "erosion cycles" setting that can be adjusted - default is 250, making it zero will disable it.  There is also a "periodically erode extreme cliffs" setting.