Thotlakonda came to light at some stage in an aerial survey with the aid of the Indian Navy for putting in place a Naval Base. After its discovery, most important excavations had been performed by using the Andhra Pradesh State Archaeology Department for the duration of 1988 - 1993. The excavations hooked up the existence of a Hinayana Buddhist complex which flourished 2000 years ago. To the South of the complicated there may be a tank which served as a water supply to the inhabitants of the monastery.
The excavations monitor Satavahana dynasty lead and Roman silver coins indicating foreign exchange; terracotta tiles, stucco decorative portions, sculptured panels, miniature stupa fashions in stone, and Buddha footprints had been additionally observed. The excavations additionally yielded twelve inscriptions in the Brahmi script. From polygraphic research, it appears that the hill could have been known as Senagiri; Senain Pali manner "elder, advanced".