I got a place with iron, flux, coal, sand, clay (although not fire clay), semi-flat and with a natural waterfall (only 2 z-levels), also savage and bening. Although in the world you can manage some good and evil regions. Don't have a volcano, but the magma sea is just 36 z-levels down.
Base materials:
SOIL : 66399
STONE : 952501
VEIN : 252797
ICE : 1878
MAGMA : 101335
Layer materials:
MARBLE : 175398
GRANITE : 144637
QUARTZITE : 127912
DIORITE : 99352
PHYLLITE : 80923
SHALE : 74750
SCHIST : 72026
GABBRO : 61589
GNEISS : 60924
CLAYSTONE : 28878
SLATE : 26112
CLAY_LOAM : 20383
LOAMY_SAND : 17323
SAND_TAN : 15324
SILTY_CLAY_LOAM : 13369
>>> TOTAL = 1018900
Ores:
TETRAHEDRITE : 23180
SPHALERITE : 17052
MAGNETITE : 14992
NATIVE_GOLD : 10494
GALENA : 2298
NATIVE_PLATINUM : 309
CASSITERITE : 153
>>> TOTAL = 68478
Gems:
>>> TOTAL = 0
Other vein stone:
MICROCLINE : 55301
MICA : 51066
BAUXITE : 25338
COBALTITE : 10358
GYPSUM : 7582
COAL_BITUMINOUS : 5748
CINNABAR : 4931
PYRITE : 1932
GREEN TOURMALINE : 1640
MILK QUARTZ : 1293
ALMANDINE : 1069
SMOKY QUARTZ : 920
CRYSTAL_ROCK : 894
RED ZIRCON : 881
AMETHYST : 858
PRASE : 811
BROWN ZIRCON : 767
GREEN ZIRCON : 738
CITRINE : 653
QUARTZ_ROSE : 629
JELLY OPAL : 603
WAX OPAL : 583
SCHORL : 555
BLACK ZIRCON : 524
YELLOW ZIRCON : 501
SPINEL_RED : 458
CLEAR TOURMALINE : 441
YELLOW SPESSARTINE : 355
MORGANITE : 346
SPINEL_PURPLE : 344
PINK GARNET : 338
PYROLUSITE : 337
BLACK PYROPE : 335
RUTILE : 334
MORION : 322
OPAL_REDFLASH : 313
AVENTURINE : 310
AQUAMARINE : 284
PINK TOURMALINE : 269
MOONSTONE : 251
GOLDEN BERYL : 225
HONEY YELLOW BERYL : 215
CAT'S EYE : 211
RUBICELLE : 210
CLEAR GARNET : 193
ALEXANDRITE : 188
LAPIS LAZULI : 186
YELLOW GROSSULAR : 166
VIOLET SPESSARTINE : 151
GOSHENITE : 147
BLUE GARNET : 141
HORNBLENDE : 130
FIRE OPAL : 124
JASPER OPAL : 110
RHODOLITE : 90
BLUE JADE : 84
HELIODOR : 80
TSAVORITE : 79
CHRYSOPRASE : 74
OPAL_LEVIN : 64
TIGEREYE : 50
BROWN JASPER : 40
RED TOURMALINE : 34
OPAL_CRYSTAL : 33
RED PYROPE : 21
SHELL OPAL : 17
CALCITE : 17
TOPAZOLITE : 14
CHRYSOBERYL : 13
>>> TOTAL = 184319
Shrubs:
BERRIES_PRICKLE : 421
VINE_WHIP : 418
GRASS_LONGLAND : 221
BERRIES_STRAW_WILD : 202
ROOT_HIDE : 199
MUSHROOM_HELMET_PLUMP : 186
GRASS_WHEAT_CAVE : 182
GRASS_TAIL_PIG : 172
POD_SWEET : 171
BUSH_QUARRY : 162
WEED_BLADE : 95
WEED_RAT : 84
MUSHROOM_CUP_DIMPLE : 78
BERRIES_FISHER : 37
REED_ROPE : 28
>>> TOTAL = 2656
Wood in trees:
TOWER_CAP : 311
FUNGIWOOD : 301
ASH : 270
BIRCH : 263
ALDER : 231
CHESTNUT : 230
OAK : 222
HIGHWOOD : 218
MAPLE : 216
WILLOW : 155
BLACK_CAP : 84
BLOOD_THORN : 67
GOBLIN_CAP : 62
TUNNEL_TUBE : 62
SPORE_TREE : 61
>>> TOTAL = 2753
[WORLD_GEN]
[TITLE:Cool World]
[SEED:32528949]
[HISTORY_SEED:1766612775]
[NAME_SEED:730358630]
[CREATURE_SEED:3844939316]
[DIM:129:129]
[EMBARK_POINTS:1274]
[END_YEAR:99]
[BEAST_END_YEAR:200:80]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:1:400:401:401]
[RAINFALL:0:100:200:200]
[TEMPERATURE:25:75:200:200]
[DRAINAGE:0:100:200:200]
[VOLCANISM:0:100:200:200]
[SAVAGERY:0:100:200:200]
[ELEVATION_FREQUENCY:2:1:2:2:1:1]
[RAIN_FREQUENCY:2:1:1:2:2:2]
[DRAINAGE_FREQUENCY:2:1:1:2:2:2]
[TEMPERATURE_FREQUENCY:2:1:3:4:1:1]
[SAVAGERY_FREQUENCY:2:1:1:2:2:2]
[VOLCANISM_FREQUENCY:1:1:1:1:1:1]
[MINERAL_SCARCITY:500]
[MEGABEAST_CAP:18]
[SEMIMEGABEAST_CAP:37]
[TITAN_NUMBER:9]
[TITAN_ATTACK_TRIGGER:80:0:100000]
[DEMON_NUMBER:28]
[NIGHT_CREATURE_NUMBER:28]
[GOOD_SQ_COUNTS:500:1000:5000]
[EVIL_SQ_COUNTS:25:251:503]
[PEAK_NUMBER_MIN:12]
[PARTIAL_OCEAN_EDGE_MIN:0]
[COMPLETE_OCEAN_EDGE_MIN:0]
[VOLCANO_MIN:3]
[REGION_COUNTS:SWAMP:0:0:0]
[REGION_COUNTS:DESERT:0:0:0]
[REGION_COUNTS:FOREST:2080:3:3]
[REGION_COUNTS:MOUNTAINS:2080:2:2]
[REGION_COUNTS:OCEAN:0:0:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:2080:3:3]
[REGION_COUNTS:HILLS:2080:3:3]
[EROSION_CYCLE_COUNT:250]
[RIVER_MINS:800:400]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:2750]
[CAVERN_LAYER_COUNT:2]
[CAVERN_LAYER_OPENNESS_MIN:25]
[CAVERN_LAYER_OPENNESS_MAX:100]
[CAVERN_LAYER_PASSAGE_DENSITY_MIN:0]
[CAVERN_LAYER_PASSAGE_DENSITY_MAX:50]
[CAVERN_LAYER_WATER_MIN:0]
[CAVERN_LAYER_WATER_MAX:50]
[HAVE_BOTTOM_LAYER_1:1]
[HAVE_BOTTOM_LAYER_2:1]
[LEVELS_ABOVE_GROUND:15]
[LEVELS_ABOVE_LAYER_1:20]
[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:1]
[CAVE_MAX_SIZE:5]
[MOUNTAIN_CAVE_MIN:25]
[NON_MOUNTAIN_CAVE_MIN:50]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:40]
[TOTAL_CIV_POPULATION:15000]
[SITE_CAP:1040]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:2080:4160:2080]
[RAIN_RANGES:2080:4160:2080]
[DRAINAGE_RANGES:2080:4160:2080]
[SAVAGERY_RANGES:2080:4160:2080]
[VOLCANISM_RANGES:2080:4160:2080]
Site:

PS: It only have 2 caverns.