To gain access to Island #8 in Pokemon FireRed, the player will need a ticket that can only be obtained through a Nintendo Special Event. Also known as Navel Rock, the player can battle and catch two Pokemon on Island #8, Lugia and Ho-Oh.
Once arriving at Navel Rock, the player should enter the cave keep on moving forward until reaching a staircase going up. At this point, the player can choose to go toward either the left or right path.
If taking the path to the left, the player encounters the Lugia. A Psychic/Flying type Pokemon, Lugia will be very strong at level 70 and already knows the moves Hydro Pump, Rain Dance, Recover and Swift.
The left path on the other hand leads the player to the Pokemon Ho-Oh. This Fire/Flying type Pokemon will also be very strong at level 70 and knows the moves Fire Blast, Sunny Day, Recover and Swift. After defeating and capturing Ho-Oh, the player can also obtain Sacred Ash by searching the spot where Ho-Oh was standing.
After Navel Rock, there is another island that is only accessible with a ticket that can only be obtained through a Nintendo Event. Island #9 is also known as Birth Island and the player can obtain the attack and defense Deoxys.