Vatin circles are an archaeological site near the village of Vatin near Vršac. It consists of four regular concentric circles that, going from larger to smaller, form a slight elevation. ... Vatin circles are fully preserved and have survived for so many millennia only because they are located on barren marshland, which was not cultivated by farmers.
(https://en.wikipedia.org/wiki/Vatin_circles)

https://lh5.googleusercontent.com/p/AF1 ... lgIq=h1440 Branko B
video - we probably also see the area over which Krum flew / pravdepodobne vidíme aj oblasť, nad ktorou Krum letel
description
"Vatin circles are almost unknown in our country, they are unexplored and have been preserved only thanks to the location. We spoke with Tamas Fodor, a man who has been studying these circles with his association for years, and they have been able to document the orientation of the circles toward the sun, which would mean that this kind of ancient observatory is probably older than all northern similar locations, including Stonehenge. If that is true, circles had to be created when agriculture, when people needed to know the exact time of year."

PHOTO https://maps.app.goo.gl/qKYaPpifBHpzydUW6 Krugovi Vatin, Vršac by Александър Станков Photo - Jan 2020