## 2 Materials and Methods  
The recognition of sites was made through a combination of methods. We chose sites with more complex enclosure types with various sizes comparable with their layout, and settlement structure to the one provided by the geomagnetic survey of the Gorjani-Kremenjaca site.  
Here, we will briefly describe the methods used for site recognition and confirmation. The Institute of Archeology conducted aerial reconnaissance of eastern Slavonia and the analysis of satellite images in the period between 2014-2019 [10; 14]. The analysis of the eastern Slavonia landscape was conducted using available satellite imagery and orthophotography recordings made by the State Geodetic Administration of Croatia. From its archive images, 325 images of the area between Dakovo and Vinkovci from 2002, 2009, and 2011 were analyzed.  
We also used publicly available satellite images from services such as Google Earth, Bingmaps, Geoportal, etc. Following observations from thee satellite imagery, potential sites were regularly visited. We developed an efficient approach to confirm the existence of a site, the layout visible on the satellite images, and obtain chronological attribution. The sites were visited and monitored regularly during all seasons of the year. These were documented from the air taking ortho and oblique photographs from drones and airplanes. At every position, we also conducted intensive field surveys. We documented and collected archeological finds and subsequently analyzed its chronological attribution. According to surface finds, all of the sites presented in this paper belong to the late Neolithic Spot culture.  
For a better understanding of any site's original settlement layout prior to modern infrastructural and agricultural interventions, we used historical records. There were two main sources used for this purpose: aerial images made in the 1968 for military purposes, which are publicly available today [15]; and historical and cadastral maps from the Austro-Hungarian Empire, of which the area in question was a part of [16]. These sources proved to be essential in recognizing the possible patterns and remains of prehistoric landscapes.  
For the confirmation of the site layouts and the development of observation methods, we used data provided by European Space Agency satellite constellations Sentinel-2. For the purpose of this paper, we concentrated on the data obtained with Sentinel-2 L2A and used true color composites RGB (4,3,2). Frequent satellite images (several new images every month) provide possibilities for new observations and pattern recognition [11]. Sentinel-2 images were analyzed using the visualization tool offered by the SentinelHub service and not through direct observation of the raster files downloaded  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Site** & **Type** & **Area/ha** & **No of Enclosed Spaces** \\ \hline Klisa & twin & \(12+8\) & 4 \\ Gat Svetosince & twin & \(22\) & 3 \\ Koritna & multiple & \(3.56\) & 5 \\ Korodvar & multiple & \(8.2\) & 6 \\ Gorjani Kremenjaca & multiple & \(20\) & 3 \\ \hline \hline \end{tabular}
\end{table}
Table 1: Sites discussed in the text with their enclosure type and sizes.  
from the Copernicus Hub. The only shortcoming is the relatively low resolution for some details. In this stage of research, we used the normal color spectrum.