I'm not spoiling the name here, but I already did in the notes of one of my drawings.
Wild Pokemon found in this place:
B1: Arcanine, Gyarados, Lapras, Snorlax, Articuno (only one), Zapdos (only one), Moltres (only one), Dragonite, Mewtwo (only one), Mew (only one)
B2: Arcanine, Gyarados, Lapras, Snorlax, Dragonite, Crobat, Kingdra, Blissey, Raikou (only one), Entei (only one), Suicune (only one), Tyranitar, Lugia (only one), Ho-Oh (only one), Celebi (only one)
B3: Arcanine, Gyaraods, Lapras, Snorlax, Dragonite, Crobat, Kingdra, Blissey, Tyranitar, Swampert, Slaking, Milotic, Salamence, Metagross, Regirock (only one), Regice (only one), R