Kalibangan is one of the most important Indus Valley Civilisation sites in India, located about 100 kilometres south of Sri Ganganagar near the town of Pilibanga. The site preserves the remains of a fortified city that was occupied from approximately 3500 to 1750 BCE, making it contemporaneous with Mohenjo-daro and Harappa. Excavations have uncovered a planned street grid, a citadel mound, a lower residential city, and evidence of what may be the world's earliest ploughed field.
The small museum at the site contains pottery, terracotta figurines, seals, and other artefacts from the excavations. The site itself is open ground with visible mounds and partially excavated structures. It's not as extensively reconstructed as some larger Indus sites, but the setting — flat agricultural land that was once a thriving city — is affecting. If you have any interest in ancient history, the detour from Sri Ganganagar is well worthwhile.
Location: Near Pilibanga, Hanumangarh District, about 100km south of Sri Ganganagar via NH 62.