The excavations reveal Satavahana dynasty lead and Roman silver coins indicating foreign trade; terracotta tiles, stucco decorative pieces, sculptured panels, miniature stupa models in stone, and Buddha footprints were also found. The excavations also yielded twelve inscriptions in the Brahmi script. From polygraphic studies, it appears that the hill might have been known as Senagiri; Sena in Pali means “elder, superior”.
Thotlakonda’s peak activity was between the 2nd century BCE and the 2nd century CE owing to brisk Roman trade and religious missions sent abroad. Thotlakonda came into existence along with nearby sites in Visakhapatnam like Bavikonda and Pavurallakonda. The lofty stupas shining during the day, with their light lime plaster and with rows of wick lamps during nights, might have served as guiding landmarks of nautical commuters. There appears to have been no royal patronage for this monastery. However traders and local believers seem to have supported the complex. In its heyday, Thotlakonda might have accommodated more than 100 bhikkhus.
The complex had arrangements for storing food, clothing, medicines and served as a religious cum academic centre. Nikaya Buddhism appears to have been practiced here, including the worship of Gautama Buddha through symbols such as padukas and other material remains rather than using human representation.
Thotlakonda had declined by the end of the 3rd century.