While working on " The Mountain Code: Explore, Learn, Protect" project, students explore the natural and cultural significance of their local mountain and connect with peers from other countries to share experiences and perspectives. Through cross-curricular activities, they develop awareness of sustainability, health, and global citizenship. The project is structured around four key branches of sustainability: Health Students engage in outdoor physical activity such as hiking and nature games, promoting mental well-being through connection with nature. They explore nutrition and sustainable eating habits, and learn about the importance of clean environments for healthy living. Environmental Children study the conservation of mountain ecosystems, learn about pollution awareness and reduction, and examine the impact of climate change on natural landscapes. Social The project fosters inclusivity in nature-based learning, encourages cultural exchange and respect through international collaboration, and builds empathy and teamwork across borders. Artistic Students use natural and recycled materials in art, express themselves creatively through mountain-inspired works, and engage in storytelling, music, and performance as tools for environmental advocacy. Key Activities include nature walks and observation journals, digital exchange with international schools (videos, letters, shared Padlet), creation of collaborative artwork and eco-posters, composition of a song or performance titled “The Mountain Speaks,” and a final celebration with presentations and shared reflections. Suggested tools for collaboration include Padlet, Google Slides, and Wakelet for sharing and documentation, and Zoom or Teams for live exchanges. Partner schools may be found through platforms such as eTwinning, Global SchoolNet, or UNESCO Associated Schools. Mountain Code invites children to listen to the voice of their mountain—and to speak back with creativity, care, and connection.