The system under study in this work is a self-igniting pile of solid material. To predict and understand the effect of steep changes of the state variables on such systems. a reaction-diffusion model is employed. These systems can exhibit complex oscillatory behaviour. https://www.bekindtopets.com/super-grab-Ruth-Thompson-The-Snow-Queen-PS5-Digital-Edition-Console-Skin-p126254-deal-zone/