Here's the worldgen, I hope I managed to export it correctly:
Created in DF v0.31.16.
[WORLD_GEN]
[TITLE:SMALL ISLAND]
[SEED:388760444]
[HISTORY_SEED:1722726936]
[NAME_SEED:3860792188]
[CREATURE_SEED:276045344]
[DIM:65:65]
[EMBARK_POINTS:1274]
[END_YEAR:500]
[BEAST_END_YEAR:100:80]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:1:400:800:800]
[RAINFALL:0:100:101:101]
[TEMPERATURE:10:75:101:101]
[DRAINAGE:0:100:101:101]
[VOLCANISM:20:100:101:101]
[SAVAGERY:25:100:101:101]
[ELEVATION_FREQUENCY:3:2:0:1:0:1]
[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:4]
[SEMIMEGABEAST_CAP:9]
[TITAN_NUMBER:3]
[TITAN_ATTACK_TRIGGER:80:0:100000]
[DEMON_NUMBER:22]
[GOOD_SQ_COUNTS:1:8:0]
[EVIL_SQ_COUNTS:32:65:0]
[PEAK_NUMBER_MIN:10]
[PARTIAL_OCEAN_EDGE_MIN:0]
[COMPLETE_OCEAN_EDGE_MIN:4]
[VOLCANO_MIN:30]
[REGION_COUNTS:SWAMP:0:0:0]
[REGION_COUNTS:DESERT:0:0:0]
[REGION_COUNTS:FOREST:0:0:0]
[REGION_COUNTS:MOUNTAINS:0:0:0]
[REGION_COUNTS:OCEAN:0:0:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:0:0:0]
[REGION_COUNTS:HILLS:0:0:0]
[EROSION_CYCLE_COUNT:250]
[RIVER_MINS:5:5]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:2750]
[CAVERN_LAYER_COUNT:3]
[CAVERN_LAYER_OPENNESS_MIN:0]
[CAVERN_LAYER_OPENNESS_MAX:100]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:100]
[CAVERN_LAYER_WATER_MIN:0]
[CAVERN_LAYER_WATER_MAX:100]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:15]
[LEVELS_ABOVE_LAYER_1:5]
[LEVELS_ABOVE_LAYER_2:1]
[LEVELS_ABOVE_LAYER_3:1]
[LEVELS_ABOVE_LAYER_4:1]
[LEVELS_ABOVE_LAYER_5:2]
[LEVELS_AT_BOTTOM:1]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:25]
[MOUNTAIN_CAVE_MIN:2]
[NON_MOUNTAIN_CAVE_MIN:3]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:20]
[TOTAL_CIV_POPULATION:15000]
[SITE_CAP:264]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:136:272:136]
[RAIN_RANGES:0:0:0]
[DRAINAGE_RANGES:0:0:0]
[SAVAGERY_RANGES:0:0:0]
[VOLCANISM_RANGES:0:0:0]
The world was created with vanilla DF v0.31.16, running on Linux. Parameters are from the small island template, with increased volcanism and savagery. Number of volcanoes and civs were increased too.
This is the world before I did any embarks:
http://dffd.wimbli.com/file.php?id=3382
Here's the fortress of Wealthslanced on embark:
http://dffd.wimbli.com/file.php?id=3383Location in worldmap:
Screenshot of the cave-in:
Parts of the cavern overlapping the surface layer are collapsing. Moving the embark square one click to north reveals a pit that will drain the lake down into second cavern.
The dwarves will ignore all digging and tree cutting designations. I tried embarking here with cave-ins disabled, but the designation problem was still there. However, I found a workaround:
1. Draft the miner and woodcutter into the military, assign them picks and axes as weapons.
2. Designate digging and tree cutting jobs.
3. Order the squad to be stationed somewhere.
4. When the dwarves go to pickup their equipment, cancel the order. Make sure the squad is inactivated too.
5. They will continue with the pickup job and then go digging and cutting trees.
6. As soon as they finish all their designated jobs, they will drop their tools again. Repeat from step 2.
And this is the fortress of Claspappear. There's a deep sinkhole with eerie glowing pits at the bottom, a slade mountain in the middle of it and a welcome party of clowns:
http://dffd.wimbli.com/file.php?id=3384Location in worldmap:
And this is what happened on embark:
Screenshot of the surface:
More places to explore: (I did these experiments with another PC that has more oomph)
Embarking anywhere in this square froze and/or crashed the game:
This was an interesting place to embark. The wagon, dwarves, cats and dogs were all encased inside the stone at z-130. I tried to find the surface, went up to z+1000 until I got bored. Unpausing the game ended it all.
I have tried maybe a dozen embarks in this world. Most of them will crash the game on embark.