Looking for maps for WoGa!

Could you help me find another map, I think it’s for Heroes 3.5? Description: a small island, 3 towns, one of which is yours; you can only recruit the strongest monsters. In front of the castle, there’s a Pandora’s Box, which I think contains a sphere guarded by something. There’s also a narrow passage leading from the castle, only 2 cells wide, where all the monsters are lined up in pairs (regular and upgraded) in order of difficulty. I didn’t finish it before… then the game files got lost, so I downloaded it again. I want to know what’s at the end and finally complete it.