Though the carvings seem to flicker and dance in the light of the fires, there is nothing special about them. The stone seems to have been chipped using metal, but other than that you can tell nothing.
The torches are of the standard fire-eternity rune variety, such as you have seen used in many ancient tombs. It is a clever and elegant trick that the old nations seem to have inherited from each other. Only stubborn recalcitrance prevents the scientific community from believeing you, and you long since gave up telling them.
There is nowhere to go but the door opposite.