Buzovgrad Megalith, Ancient megalith in Buzovgrad, Bulgaria

Buzovgrad Megalith is a rock group on the northern slopes of Sarnena Sredna Gora near Buzovgrad, in Kazanlak Municipality. A roughly 1.80 m high opening is cut into the rock, formed by two horizontal blocks resting on two blocks of the main rock mass, creating a trilith. The Sun enters the "window" at sunset. About 5.80 m east of the opening, a "throne" is carved on a rock aligned with Triglav peak and the opening; a cliff drops on the opposite side.

Archaeologists date the chiselled opening to roughly 1800–1600 BC, when it was used by the population living in Bulgarian lands before the Thracians, who later inherited the site. According to Alexander Fol, similar structures stood on the opposite Balkan hills visible through the window, possibly also serving as observation and communication points. In 2009 a stone plaque honouring Fol, who died in 2006, was placed on one of the giant stones at the summer solstice.

The Thracians called the opening the Gate of the Mother Goddess and used the site to keep their calendar, since at sunset on the summer solstice the sun shines straight through the 1.80 m window onto the opposite rock. A stone plaque honouring the Thracologist Alexander Fol, whose ashes were scattered here, was placed on one of the giant stones in 2009.

Visitors can reach the site through an ecological path that connects to other historical locations in the area. The path is well-maintained and links several interesting places together.

Part of Alexander Fol's ashes were scattered at the site after his death in 2006, and in 2009 a stone plaque honouring the Thracologist was placed on one of the giant stones on the summer solstice. About 5.80 m east of the opening, a rock carved as a "throne" lies on the line between the Balkan peak Triglav and the trilithon's window.