Website and data research by 101Leafy.
Becquerel Mine
ベクレルこうざん, Dungeon
Becquerel Mine in Megami Tensei Gaiden Last Bible II for the Game Boy Color, every floor and room in one picture. Hover a pin to see what it is; chests, shops, bosses, and exits to other places are links.
Monsters met here
Every few steps the game rolls for a fight: 14 in 100, halved once the hero is above the area's level. A fight picks one of the five groups, so each comes up 1 time in 5. A group with an item leaves it at the rate shown.