Thousands of Malians annually replaster the Great Mosque of Djenne, a UNESCO site, to maintain the world's largest mud-brick building.

Thousands of Malians participated in the annual replastering of the Great Mosque of Djenne, a UNESCO-listed World Heritage site, to maintain the world's largest mud-brick building. The mosque, located in a region affected by conflicts, requires a fresh layer of mud each year before the rainy season to avoid disrepair. Despite security concerns and the disappearance of Djenne's tourism industry, the annual event is considered crucial for preserving Mali's cultural heritage.