Hell is scriptural, according to the scriptures...
Unless you're referring to the name "Hell" of course, which is not in the Bible.
A place of burning and suffering for all time? Definitely scriptural. There will be much wailing and gnashing of teeth, where the worm dyeth not.
I'm not a Christian, but I do have years upon years upon years upon years of Bible studies.
Bring those receipts! The garbage dump explanation will not suffice (Gehenna)