it's mt. faraway and you have to beat the three legendary dogs
you have to beat suicune entei and raikou to unlock mt faraway and that's where ho-oh lives
Recruit Ho-oh from Mt. Faraway. Then, an event will trigger, opening Western Cave.
Beat Northwind Field.
after you beat entei, raicou, and suicune after the first segment
Mt Faraway 40F
Mt faraway 40F. You need the key item. Can be got from wish cave.
Ho-Oh is found on the 40th floor of Mt Faraway. It cannot be recruited the first time this dungeon is completed, but from the second time onwards, it's recruit rate is 99.9%.
Go to Mt. Faraway floor 30. Make sure you bring a key.
Go to solar cave
after completing metor cave you will get access to it
Only by Nintendo events....
Waterfall Lake