Landscape archaeology, as a type of research based on a systemic surface survey and that results in quantifiable datasets of high quality, has started to be practiced in southeastern Arabia only in recent years. In this paper, I will briefly review the short history of landscape archaeology in the area and its relevance. I will then present the approach and methods used in the Wadi al Jizzi Archaeological Project and discuss some of the results obtained to discuss both the potential and problems of the data that the project generated. In particular, I will focus on ephemeral sites and assemblages, data quality and data representativity.