There are a number of references which refers it to be a literal place where the souls will be alive.
Matthew 13:42, Jesus says: “And shall cast them into a FURNACE OF FIRE there shall be wailing and gnashing of teeth." If they are wailing and gnashing of teeth, that sounds pretty much they are alive to me.
The rich man in Luke 16:23-25 said it was" torment “place of torment" cried:. . .I am tormented in this FLAME.” He was described by Jesus as conscious and feeling pain and able to speak. Sounds like he was alive to me.
That's only a couple Bowral to keep you entertained.