Hydrogen is positioned as a key player in the pursuit of sustainable energy, with the recent discovery of natural hydrogen reserves beneath mountain chains sparking excitement. Serpentinization, a geological process in mountainous areas, facilitates the formation of natural hydrogen through the reaction between peridotites and water. This 'white hydrogen' differs from 'gray hydrogen' sourced from fossil fuels and 'green hydrogen' produced using renewables. Exploration projects in the Pyrenees, Alps, and Balkans aim to uncover and exploit these hydrogen deposits, presenting a cleaner energy source if commercialized efficiently. Challenges include locating deep-seated deposits, refining extraction techniques for sustainability, and establishing robust storage and transport infrastructures. Despite hurdles, natural hydrogen shows great potential to revolutionize the energy landscape by offering a cleaner, abundant, and cost-effective energy alternative.