they are on the floors of higher leveled dungeons.
Solar Cave. You might need a key to open the box. You can find a link cable inside.
in a key door on western cave B59F
in some dungeons there will be doors you use the key on the doors while facing them
no, you need to go to the solar cave. there is a bit of water around the HM, so all you need is a Pokemon that can walk on/over water
You will find the key to the Gym of Cinnabar Island, From the Pokemon Mansion that is on the same island.
You can find them lying around in Solar Cave.
In Aegis Cave
you usually can find keys in the solar cave
29F in Northwind Field a key is required
To get key(s) go to solar cave and you got to search for it because they r a little hard to find. YOU NEED TO GET THE DUNGEON STORMY SEA IN ORDER TO GET TO SOLAR CAVE.
In any floor i found it on floor 2
Solar Cave. You might need a key to open the box. You can find a link cable inside.
in a key door on western cave B59F
in some dungeons there will be doors you use the key on the doors while facing them
sometimes in dungeons you will find a door if you have a key you can open it the door sometimes the door opens to a rare Pokemon that can be recruited or a rare item
its called a friend bow and you could find it in mt. faraway floor 30. MAKE SURE U BRING A KEY!
35 floor of wyvern hill, with a key on a locked door. Or find a special wonder mail.