Zone 5 and has yet to be revealed, so not much is known except for speculation. The only other Zone to be unannounced is Zone 6. The title of this page will be updated once the name of this Zone is known. Until then, all you will find here is speculation.
In the World Zones Research concept art, you can see dark clouds with lightning. This tells us that a thunderstorm could cover the area. It could also hint towards Zone 5 being in the air above Zone 1 to 4.
But this is unlikely due to caves of Zone 5 also covered in the Thunderstorm above Zone 5. This was obviously done to obscure the caves of Zone 5, but due to this "in the air" theory is from the table. Or is it? It could also just show lights in the place of caves because it better fits in this picture.
It is also commonly thought that Zone 5 will be the Zone to represent the Lightning Element, as a result of the electricity and the fact that lightning is the only of the main 5 elements not represented in another zone.
A new speculation following the release of the RiotX Arcane Epilogue, unleashed by Riot games in November 20 2021, is that These two zones are going to be known as the poisenlands and the skylands. In 4:16, there is a brief moment were the weather edited is open, and in the far left corner, you can see the words poisonlands and skylands, hinting to their properties. These may not be there official names as Borea is known as snowlands and the Emerald g\Grove as grasslands, but it still gives information of what they may be like.
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