## 5 Conclusions and Future Outlooks  
This research showed that a multidisciplinary collaboration between a satellite image analyst and an archaeologist using multispectral and SAR imagery, alongside state-of-the-art remote sensing tools, represents a useful approach for rescue archaeology practice, in particular for the Pre-Construction Archaeological Risk Assessment (PCARA) and Pre-Flooding Rescue Archaeological Program (PFRAP) protocols recently proposed to properly document archaeological sites threatened by dams [31]. The workflow presented in this paper is relatively easy to use for archaeologists with basic skills in a limited time and it allows detection of potential new sites. In some cases, as the implementation in GERD demonstrates, the possibility to combine open access non-commercial recurrent observations at a fairly suitable spatial resolution (i.e., 10 m) with specifically tasked new image collections at high spatial and temporal resolutions (i.e., 3 to 1 m, and up to few days, respectively) can help to overcome the intrinsic and well-known limits of open access VHR imagery from Google Earth. The latter, alone, may be suitable in terms of spatial resolution (provided that the objects of interest are well visible and the whole study area is covered) but certainly fail to provide a continuous observation of the situation on the ground in absence of a regular time-lapse. The multi-temporal component allows the construction phases of the dam to be monitored, as well as the identification of anomalies, in order to better organize archaeological activities. This research should be therefore contextualized in the wider process of integration of space technologies to support the monitoring and documentation of cultural heritage that officially began over almost twenty years ago when UNESCO and ESA launched an \"Open Initiative on the Use of Space Technologies to Support the World Heritage Convention\" [6]. As such, this type of satellite-based workflow should be integrated among the operational guidelines of a PCARA and PFRAP protocols to be developed and further implemented in other scenarios of dam construction. It is envisaged that the demonstration of the benefits achievable by the use of space technologies in support to rescue archaeology should be of interest to major bodies involved in the construction of dams, such as the World Bank, the International Monetary Fund, the Asian Development Bank or the Inter-American Development Bank [31; 34]. The implementation of remote sensing-based measures in rescue archaeology investigations towards risk mitigation and the opening of a fruitful dialogue with all the stakeholders are crucial, given that the issue of the impact of dam construction on cultural heritage grows dramatically. In order to strengthen the impact of the methodology tested in this paper and the recognition of the system of the three protocols proposed by [PERSON] et al. [31], it may be worth exploring the recommendation made by [PERSON] and [PERSON] [50], i.e., the development of a mechanism and action plan allowing private corporations and governmental agencies to be certified to meet certain standards. [PERSON] and [PERSON] [50] proposed the International Organization on Standards (ISO) as a potential example. Under this perspective, in a future scenario, the workflow presented in this paper, along with the three protocols proposed by [PERSON] et al. [31], could become part of a dedicated ISO. As suggested by [PERSON] and [PERSON] [50], the latter could take inspiration from the ISO 14000 which focuses on environmental management concerns of those around one's place of business. Moreover, to disseminate this satellite-based methodology, a feasible way forward would be via capacity building projects in which established co-working teams, encompassing archaeologists, heritage experts and satellite image analysts, will train stakeholders from national heritage institutions, commercial archaeology companies and academia.