Monks' cells cut into the hillside rock among the Udayagiri and Khandagiri caves dating back to over 100 years BCE sculpted as religious retreats for Jain devotees, Bhubaneswar, Odisha, India, Asia

khandagiri odisha india ancient cave rock cut entrance entranceway rock face carved weathered eroded textured historical archaeology history architecture religious hindu buddhist jain ancient site monument heritage travel tourism destination landmark exploration discovery culture civilization past heritage site stone steps carvings ruins remnants