Abstract: The invention concerns a fire-resistant flexible wall, comprising a first surface facing towards the fire, and an insulating material layer provided between a basalt fabric layer and a second surface opposite the first surface. The wall may comprise a second basalt fabric layer provided between the insulating material layer and the second surface. The wall may further comprise a continuous metal layer. Each layer plays a specific role (mechanical or fire resistance, thermal insulation, smoke shield or gas shield) and enables walls of large dimensions and high efficiency to be produced.