Firewall

Fire Walls are obstacles that appear in the Digital Circuit level of Shadow the Hedgehog.

Fire Walls are large, glowing orange walls that, according to Rouge, are among many of G.U.N's defenses that are set up in the virtual world that the Digital Circuit is part of in order to ward off intruders.

Description
These walls appear only during the auto-rolling circuit sections, where they abrupbtly appear from below in front of the player to block their path. These Fire Walls can be avoided by taking an alterate path than the one they appeared on, though this often requires good reflexes.