Diamond Triangle (Lalitgiri, Ratnagiri, Udayagiri)

Together with the Lalitgiri and Udayagiri sites, Ratnagiri is part of Puspagiri University located on top of hills of the same names. The three complexes are known as the "Diamond Triangle". Significant finds at this complex include Buddhas relics. Tantric Buddhism was practiced at this site.It is a major center of Buddhism hemmed between the Parabhadi and Landa sandstone hills in the standalone Assian hill range.

Ratnagiri, located in the Jajpur district in the state of Orissa, is a renowned Buddhist holy destination. Ratnagiri monastery in Jajpur district of Odisha crowning flat hill-top is affording a panoramic view of the surrounding might have been chosen for the seclusion for the serene and calm atmosphere necessary for monastic life and meditation studies. The place consists of several important Buddhist sculptures spotted around the hills.

Lalitgiri (also known as Naltigiri) is a major Buddhist complex in the Indian state of Odisha comprising major stupas, esoteric Buddha images, and monasteries , one of the oldest sites in the region.

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