GCI training of technicians responsible for the maintenance of in-situ archaeological mosaics in Tunisia. The program, done in partnership with Tunisia's Institut National du Patrimoine, combines a series of training courses with a long-term program of mentored practice that allows skills and confidence to be developed slowly and systematically. During the practice period, trainees have intermittent access to a teacher who can provide guidance and evaluation. Photo: Elsa Bourguignon, Richard Ross.