Dotted Hole (Japanese: てんのあな Dotted Hole) is a place only accessible in Pokémon FireRed and LeafGreen. It is located in Ruin Valley on Six Island and is the place where players will get the Sapphire, which, in conjunction with the Ruby, allows Celio's Network Machine to connect to Lanette's PC system in Hoenn, and enables trades with Ruby, Sapphire, and Emerald, Colosseum, and XD. A Team Rocket scientist, Gideon, will steal it, though, and the player must venture back to Five Island to retrieve it from him. In order to open the door, the player must use Cut in front of it. However, Gideon will stand in front of the door until the player helps Lorelei defeat the three Team Rocket Grunts at Icefall Cave.
Along with the cave within Mt. Ember, this is one of only two locations in the Sevii Islands that has Braille writing, both on the door (from which the area gets its name) and within, which will direct players to the location of the Sapphire.
- The message at the bottom floor of the Dotted Hole is possibly a reference to Bill and Celio creating a device that allows trade between FireRed and LeafGreen and Ruby, Sapphire and Emerald by using the Ruby and Sapphire found in the Sevii Islands.
- The pillars and door at the entrance to the Dotted Hole actually have real braille symbols on them. The full six-dots found on the door is the arrangement for "For" as used in Grade 2 braille, the left pillar (with the single upper-left dot) has the arrangement for the letter "A", and the right pillar (with the three dots in the bottom-right) has the arrangement for a closing quotation symbol (”) also as used in Grade 2 braille.
- While the Dotted Hole's location blurb suggests the mark on the door was not intended to have meaning and only there to give some reasoning for the Dotted Hole's name, the marks on the pillars are there deliberately, though seemingly random.
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