Mouna Hammou2026-05-072026-05-072025-10-22https://dspace.univ-batna.dz/handle/123456789/9594الندوة الدولية السادسة حول المدينة والسكن: الرهانات البيئية والاجتماعيةThe M’zab Valley in southern Algeria, classified as a UNESCO World Heritage Site in 1982, offers a unique example of how cultural heritage can contribute to environmental protection and sustainable living. This study explores both tangible and intangible heritage practices of the Mozabite community, highlighting their relevance for contemporary urban and environmental planning. On the tangible side, the compact urban design of the ksur (fortified towns) and the passive architecture of their houses illustrate efficient strategies for energy conservation and thermal comfort in arid climates. Narrow streets, thick walls, limited openings, and central courtyards reduce heat gain while allowing natural ventilation. In the oases, the Rainwater Distribution System (RDS) demonstrates an effective use of floodwater, simultaneously irrigating palm groves and recharging aquifers without mechanical intervention. Intangible heritage is equally significant. Rooted in both Islamic teachings and the scarcity of natural resources, traditional practices emphasize conservation and resource efficiency. These include water reuse for multiple household purposes, the regulation of building heights to protect access to sunlight and wind, and the prohibition of construction in valley streams to safeguard groundwater. Traditional games, waste management habits, and food recycling through domestic animals also reflect sustainable cultural practices. Survey results from 594 inhabitants indicate that 92% of households do not discard food leftovers, with most reusing or redistributing them, thereby reducing organic waste reaching landfills.othercultural heritageMzab Valleyenvironment protectionurban challengesWorking Paper