Restablecidas C5 y C6, el Euromed y la conexión con Castellón – Renfe

Write a detailed and engaging article about Restablecidas C5 y C6, el Euromed y la conexión con Castellón  Renfe. The article should be structured with clear distinct paragraphs, each focusing on a specific aspect of the topic. Keep the tone human and conversational while ensuring the content is informative, well-organized, and easy to read. avoid adding a conclusion; focus purely on delivering structured, insightful information.