The megalith near Buzovgrad, also known as the Solar Gate, is an ancient sanctuary.
The ancient Thracians used it both for cult and ritual purposes and as a marker of time. This was possible because the sun's rays at sunset, on the day of the summer and autumn equinoxes (June 21 and September 22), pass right through the opening formed by the stone blocks and fall on the opposite rock. Since 2013, the site has been declared a natural landmark. To the east of the megalith is the Roman fortress of Buzovo Kale.