It was a physical experience. I felt the heat, my throat and lungs became hot and dry in a single breath. I tasted the sulfur, it was very real in the physical realm. I can never forget, even when I have my moments of doubt, I remember that hell is real and I for a small brief moment in time I experienced it. It is a blessing from God, my compass is always on Him, because I know what the absence of God feels like. God Bless You.