 He is credited with the discovery of one of the oldest Kannada inscriptions, the Halmidi inscription, dating back to 350 A. D. He also discovered the remains of the city of Isila near Brahmagiri during his excavations at Chandravalli, Chitradurga.The forgotten tomb of Shahaji (Shivaji's father) was traced by M. H. Krishna during his years at the Mysore Archaeological Department.His years at the Archaeology Department saw him churn out many of excavation reports (close to 2000 inscriptions discovered) and these were later published in successive volumes of "Epigraphia Carnatica".