This commemorative souvenir sheet and stamp, Edifil No. 5253, was issued by Correos Spain on September 24, 2018, celebrating the engineering achievement of the Haramain High Speed Railway connecting Mecca and Medina in Saudi Arabia. The €1.35 stamp features the Spanish-built “Desert AVE” high-speed train, highlighting the contribution of a Spanish consortium to this major infrastructure project. Adding to its innovative design, the stamp was produced using offset lithography and thermographic ink containing actual sand particles, creating a tactile representation of the desert landscape. The issue combines engineering, international cooperation, and innovative philatelic techniques in a distinctive commemorative design.