Early
Chaitya halls are known from the 3rd century BCE. They generally followed a circular or
apsidal plan, and were either rock-cut or freestanding. Temples —built on elliptical, circular, quadrilateral, or apsidal plans— were initially constructed using brick and timber. Some temples of timber with
wattle-and-daub may have preceded them, but none remain to this day. The layout created two
pradaksina circular paths for devotional deambulation. The global shape of the temple has been inferred from more or less contemporary reliefs of such buildings from
Bharhut, or from rock-cut temples at
Kondivite,
Tulja Caves or
Guntupalli Caves. Dating to circa 250 BCE, the edict was found just in front of the remains of the Bairat Temple, on the lower platform located between the temple and the cannon-shaped large rock, by Major Burt in 1840 (). The presence of this inscription, its date and its Buddhist content, help date the temple with a high level of certainty, as well as confirm its Buddhist affiliation. A commemorative plaque is visible at the Asiatic Society. The inscription of Asoka found from this region addresses the Buddhist monks. There must have been a considerable presence of the Buddhist monks in Bairat. But the centre must have declined in later period and a change in situation is recorded in the travelogue of Hieun-tsang who wrote that the popularity of Buddhism in Bairat was not what he had imagined it to be. ==Other circular temples==