The Kalka-Shimla Railway in Ambala, India, a UNESCO World Heritage site, was selected for the deployment of hydrogen-powered trains. Despite the announcement over two years ago, the project remains in its initial stages. The region's challenging terrain with 102 tunnels made overhead electrification difficult, leading to the consideration of alternative solutions like hydrogen or battery-powered trains. Indian Railways is committed to achieving zero carbon emissions and plans to introduce hydrogen-powered trains on this scenic heritage section. The innovative technology of hydrogen fuel cells promises zero emissions, aligning with sustainability goals. Although initial costs are high, the project aims to reduce costs with more train introductions. Three hydrogen fueling stations have been identified at Kalka, Shimla, and Barog, with a detailed project report under development. The delay in the project showcases the challenges of implementing new technologies in heritage sites while emphasizing the importance of sustainability in transportation.