there isn't one.but, if you complete solar cave, and have the friend area southern island, you can get the mission to conquer the northern range and get latios and latias.you have to do the northern range and pittfall valley,which youu do after the northern range to get them,but they want to join your team automatically.
hope i helped!=)
Keys can be found on the floor in Solar Cave and Western Cave. They are more frequently found in Solar Cave, though.
After you beat the game you can go to solar cave you can find keys in there.
after beating Raquayza Medicham will appear in front of the team base so, you have to talk to him then go talk to Lombre in pokemon square then go talk to Wishcash in his pond then in the conversation he'll say something about the solar cave then after talking to him go to the dungeon list and solar cave will appear
In Pokemon Mystery Dungeon: Red/Blue Rescue Team, link cables are found where important items were once kept i.e. HM's, etc. For example, if you have surf, on floor 20 of Solar Cave, where Surf once was, a link cable will now be there. Important items are found in Solar Cave, Wyvern Hill, Mt. Faraway and Wish Cave.
You can get the Waterfall HM in Solar Cave (with key on any floor or without key on 20F, Look for a place with water in a square).
In solar cave
in the solar cave
there are 23
Solar cave,whiscash.
Go to solar cave
There are 20 floors.
You'll get it after you beat the game.
The Sun will be there waiting to congratulate you
Keys can be found on the floor in Solar Cave and Western Cave. They are more frequently found in Solar Cave, though.
10 but you need a Key from Solar Cave to open the lock box that contains it
After you beat the game, you yalk to whiscash. He will giv you dive. He then will say "If you lose this, go to solar cave." And........ poof! you hav solar cave!!!!!!!!!
when you defete the game you have to do some thing