The Gateways (unofficial name) are Terraportals to great distances away. One is first seen in Slugterra: Eastern Caverns, where The 99 Caverns's gate is seen being guarded by the Shadow Clan and is used to get Junjie and the Shane Gang to The Eastern Caverns.
In Slugterra: Into the Shadows, it is used to get the Shane Gang back to The 99 Caverns.
- There's a symbol at the very top & center, which represents the current location; in this case The 99 Caverns
- The Eastern Caverns
- The Surface
- The Gateway(s) can only be activated using The Elementals, but possibly need the Shadow Clan as well.
- The Gateway(s) haven't been used in a thousand years, which resulted in the Shadow Clan forgetting about their existence.
- It is possible that there is a Gate in each realm and that the Gates are protected by their realms' Shadow Clan.
- It's unknown if 1 of the 6 destination symbols was a Deep Caverns symbol.
- The different Realms on the Gateway are most likely beneath the 7 continents of the world. For example:
- The 99 Caverns- North America
- The Eastern Caverns- Asia
- Unknown- South America
- Unknown- Europe
- Unknown- Africa
- Unknown- Australasia Oceania