Archaeologists have discovered a remarkably well-preserved 9th-century temple dedicated to the sun god, Surya, in the remote Karauli district of Rajasthan. The structure is notable for its unique antimony-glass solar apertures, which were expertly integrated into the stone lattice to channel concentrated light into the inner sanctum during specific lunar phases and equinoxes.
This finding highlights the architectural ingenuity of the Gurjara-Pratihara dynasty, particularly their advanced mastery of optical engineering and celestial alignment. The temple site also contains several rare inscriptions detailing early medieval astronomical observations and the specific rituals performed to mark the passage of the solar year.