Workers repairing the roof of the Mausoleum of Ibn Zayd at the Silk Road site of Merv in Turkmenistan. A Responsibility for the Past: Integrating Conservation and Archaeology
 

Workers repairing the roof of the Mausoleum of Ibn Zayd at the Silk Road site of Merv in Turkmenistan, in September 2002. Archaeologists, conservators, and park managers are working closely together to provide an integrated approach to preserving this World Heritage Site. Here the mausoleum's early-20th-century concrete roof is replaced with a traditional earthen roof, which requires low maintenance and provides an effective weatherproof surface that allows the structure to breathe. Photos: Tim Williams, Institute of Archaeology, University College London.