  A simple, closed-form solution to the Yang-Mills field equations is presented
which has a non-Abelian firewall - a spherical "horizon" where the energy
density diverges. By the gravity/gauge duality, this non-Abelian firewall
implies the existence of a gravitational firewall. Gravitational firewalls have
been proposed as a way of resolving the information loss paradox, but at the
cost of violating the equivalence principle.
