{{Trainerentry|Spr HGSS Super Nerd.png|Super Nerd|Teru|432|4|081|Magnemite||7|None|100|Voltorb||11|None|081|Magnemite||7|None|081|Magnemite||9|None|36=テルキ|37=Teruki}}
{{Trainerentry|Spr HGSS Super Nerd.png|Super Nerd|Teru|432|4|081|Magnemite||7|None|081|Magnemite||7|None|081|Magnemite||9|None|100|Voltorb||11|None|36=テルキ|37=Teruki}}
The Goldenrod Tunnel (Japanese: コガネちかつうろKogane Tunnel), known as the Underground (Japanese: ちかつうろUnderground Path) in Generation II, is a shopping district stretching below Goldenrod City. The shops that are open in the Tunnel depend on the days of the week and, in some cases, the time of day.
Goldenrod Tunnel contains a barber shop, Herb Shop, and a shop selling valuable items. Each shop has set opening hours; the three shops are never open at the same time.
The Goldenrod Department Store's basement opens up onto the Goldenrod Tunnel. Although the basement is accessible from the main store right from the start, the back entrance is initially occupied by Team Rocket and cannot be accessed until later. Petrel hides the Goldenrod Radio Tower Director here while he impersonates him but will give the player the Basement Key upon being defeated. Inside, there are Team Rocket Grunts and Silver to battle and a series of switches to turn ON/OFF in order to navigate through the basement completely.
Some rare items can be found in this section of the Department Store's basement.
During Team Rocket's invasion of the Goldenrod Radio Tower, the player must wear this uniform as a disguise to enter the Radio Tower. They will not battle in this costume nor can they (legitimately) leave Goldenrod City while wearing it.
Photo gallery
The saved photo of a dressed-up Pokémon from the photo booth is displayed in the photo gallery. In addition, photos from up to ten players that have mixed records with will also have their photos displayed here.
A Hiker appears in the photo gallery who runs an Accessory drawing. The player can apply for $100, having the chance to win a random Accessory.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: Confirm the anime's Japanese and English names
Ash, Misty, and Brock explore the Underground Path with Whitney in A Goldenrod Opportunity. She takes them through the shopping plaza on their way to the Goldenrod Galleria but manages to get lost several times along the way. The Underground Path is much larger in the anime but staples from the games are seen in this appearance, including both Haircut brothers.
In other languages
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: Missing languages and check all languages for differences between Generations II and IV