Some historians suggest that the Iron Pillar at Delhi originally stood at Udayagiri.
As per the inscriptions, Udayagiri was called Vaishnupadagiri - the hill of Vishnu's footprints.
In Kalidasas Meghdoot he quotes Udayagiri as Nichairgiri
Udayagiri consists of 20 rock-cut caves on a sandstone hill.
Out of 20 - 18 are related to Hindu & 2 to Jains.
Cave 1
Located on the southern part of the hill has a Jain pratima inside.
This is what remains of a 10th-century Vishnu temple in Gyaraspur.
Hindola-Toran: The pillars are beautifully carved with 10 incarnations of Vishnu: Matsya, Kurma, Varaha, Narasimha, Vaman, Parshuram, Ram, Krishna, Buddha & Kalki.
Char-Khamba: 4 pillars near Hindola toran, they look like part Mahamadapa of an ancient temple which doesn't exist now.