Silver Trench

Final Floor: 99F
Unlock Method: Befriend Articuno, Zapdos, Moltres and speak to them in Legendary Island in the Rescue Camp
Initial Level:
Maximum Teammates:
Items:
Check Map:
Opponents Able to Join:

After you have befriended Latios and Latias, you will be able to recruit the Legendary Birds. If you do, Alakazam will appear and mention that there is a disturbance in Legendary Island. If you go there, the Legendary Birds will create a vortex to take you to the Silver Trench. Complete all 99 Floors of the Dungeon and you'll find Lugia at the top. Battle it and it will join you and give you the Deepsea Current Camp