Black pea (Pisum sativum ssp. arvense), locally known as kala matar, is an underutilised indigenous legume traditionally cultivated in the cold desert regions of the Indian Himalayas, particularly the Spiti Valley. Despite its high nutritional value and exceptional climate resilience, this hardy pulse has gradually declined due to the replacement of subsistence crops with commercial green peas. The present article highlights the ecological, nutritional, cultural, and economic significance of black peas, emphasizing their adaptation to low temperatures, limited rainfall, and poor soils, along with their role in biological nitrogen fixation and sustainable farming systems.