Hasmathpet cairns

Hasathpet cairns is a historic cairn circle or megalithic burial site located in Secunderabad, Andhra Pradesh, India. The site is among 12 other such sites that are state protected.

The site was discovered by Dr.Walker and was discovered to be from 1000 AD, another excavation was done in excavation was taken up in 1934-35 during the reign of Nizam, under the supervision of D. G. Mackenzie.

...
Wikipedia