Helix Stone

Helix Stone - Powerful demonic artifact featured in Doom (2016). It is a large stone with a strange symbol on it.

Doom (2016)
Helix Stone is a demonic stone, which player spot at the end of level Lazarus Labs. It was first mentioned by General Hayden while Doom Slayer uses an elevator to go deep into UAC Base, where he says, that only few had a chance to see it.