As fans strap in for the second instalment of Stranger Things season 4, there's one question on everyone's minds - how is there electricity in the Upside Down?

We're not here to drop spoilers, but Easter eggs throughout the volume suggest that it's pretty well-equipped - from Eddie Munson's epic Metallica guitar solo on a huge amp, to a power line falling down behind Nancy during another scene.

'Did they run an extension cable through the portal?' one fan asked, while others were quick to point out it's completely fictional, so anything goes.

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