Barabar Caves

The Barabar Caves in Bihar's Jehanabad district are among the oldest surviving rock-cut chambers in India, carved into solid granite and polished to a mirror finish during the 3rd century BCE under the Maurya emperor Ashoka. The four caves contain seven chambers in total — a layout that earned them the local name 'the seven inns.' They were donated to the Ajivika sect, an ancient ascetic movement now largely extinct, as retreats for meditation during the monsoon season. Short Brahmi inscriptions record the imperial donations and provide rare epigraphic evidence of Maurya-era patronage. Most striking to visitors today is the interior surface: the granite walls were polished to such precision that they still reflect light like glass, a technique that modern stone-cutters have not fully been able to replicate. The Archaeological Survey of India has placed the site on India's tentative UNESCO World Heritage list.