Tunnels may suffer severe damage when passing through an active fault in high-intensity earthquake zones. The present study aims to investigate the performance of an isolation layer composed of a rubber-sand mixture. an emerging trend in low-cost seismic mitigation studies. Based on the Ngong tunnel in the Nairobi-Malaba Railroad in Kenya. https://www.bekindtopets.com/deal-find-Torque-Converter-Asymmetric-Belt-for-Coleman-KT196-CK196-Go-Karts-flash-save/