Cleaning the mosaic floor in the prayer hall of a Byzantine monastery in the northern NegevIf you’ve ever wanted to participate in an archaeological excavation in the Holy Land, this is the way to do it.  Every site on the list in this article http://mfa.gov.il/MFA/IsraelExperience/History/Pages/Archaeological-Excavations-in-Israel-2015.aspx  is spectacularly important to the history of the world.