Masonry structures require careful understanding of their materials, construction methods, conditions, and environment before any intervention is performed. This workshop, offered in partnership with the Vanishing Treasures Program, combines classroom and hands-on field work to give trainees an effective introduction to pre-contact masonry preservation, with special emphasis on preservation at archaeological sites. Conservation science topics covered in the classroom will include basic geology, stone and mortar characteristics, and common deterioration patterns. Working with experienced archaeologists, students will have opportunities to practice reading condition in the field and discuss when it is necessary to consult professional engineers or conservators. Professional craftspeople will lead field exercises working with masonry tools to repoint mortar joints and stabilize courses.