This is a 4x4, and it's not exactly the most terrifying place to embark, though, it does have plenty in the way of features...
Flux, Aquifer, River(Brook), underground river, underground pool, magma pool, magma pipe, chasm, HFS, 100 z-levels, a tiny bit of sand and access to all civs.
Press "p" to allow all rejects when asked.[WORLD_GEN]
[TITLE:NEW]
[SEED:3072787075]
[HISTORY_SEED:3629570892]
[NAME_SEED:1364375378]
[DIM:65:65]
[END_YEAR:10]
[BEAST_END_YEAR:512:90]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:0]
[ELEVATION:1:400:1600:1600]
[RAINFALL:0:100:1600:1600]
[TEMPERATURE:25:75:1600:1600]
[DRAINAGE:0:100:1600:1600]
[VOLCANISM:0:100:1600:1600]
[SAVAGERY:0:100:1600:1600]
[ELEVATION_FREQUENCY:1:1:5000:5000:1:2500]
[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:1:1:1:1:1:10000]
[VOLCANISM_FREQUENCY:1:1:1:1:1:10000]
[GOOD_SQ_COUNTS:6:63:127]
[EVIL_SQ_COUNTS:100:250:500]
[PEAK_NUMBER_MIN:1]
[OCEAN_EDGE_MIN:0]
[VOLCANO_MIN:200]
[REGION_COUNTS:SWAMP:66:0:0]
[REGION_COUNTS:DESERT:66:0:0]
[REGION_COUNTS:FOREST:264:0:0]
[REGION_COUNTS:MOUNTAINS:528:0:0]
[REGION_COUNTS:OCEAN:528:0:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:528:0:0]
[REGION_COUNTS:HILLS:528:0:0]
[EROSION_CYCLE_COUNT:275]
[RIVER_MINS:800:800]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:5000]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:25]
[MOUNTAIN_CAVE_MIN:6]
[NON_MOUNTAIN_CAVE_MIN:12]
[ALL_CAVES_VISIBLE:0]
[SHOW_EMBARK_RIVER:2]
[SHOW_EMBARK_POOL:2]
[SHOW_EMBARK_M_POOL:2]
[SHOW_EMBARK_M_PIPE:2]
[SHOW_EMBARK_CHASM:2]
[SHOW_EMBARK_PIT:2]
[SHOW_EMBARK_OTHER:2]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:35]
[TOTAL_CIV_POPULATION:-1]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:528:1056:528]
[RAIN_RANGES:528:1056:528]
[DRAINAGE_RANGES:528:1056:528]
[SAVAGERY_RANGES:528:1056:528]
[VOLCANISM_RANGES:528:1056:528]