Lake Ohrid, located on the border of North Macedonia and Albania, is one of the world's oldest lakes, estimated to be 2-5 million years old. It has a maximum depth of 288 meters and a surface area of 358 square kilometers making it the deepest lake in the Balkans. The lake is renowned for its high biodiversity, hosting over 200 endemic species, including the famous Ohrid trout (Salmo ohridanus) and unique mollusks like Acroloxus macedonicus. As a UNESCO World Heritage Site since 1979, Lake Ohrid is not just a natural wonder but also a vital ecological and cultural resource. The lake's hydrological connection to Lake Prespa through subterranean channels further highlights its unique environmental significance. Preservation efforts focus on mitigating threats such as nutrient pollution, climate change, and invasive species to maintain its pristine ecological status.