A garbhagriha is the innermost sanctuary of Hindu and Jain temples, what may be called the "holy of holies" or "sanctum sanctorum".
Garbhagriha at Pattadakal with the Lingam icon of the god Shiva.
A schematic of a simple Hindu temple showing the garbhagriha sanctum, antarala and mandapa
Architecture of a Hindu temple (Nagara style). These core elements are evidenced in the oldest surviving 5th–6th century CE temples.
The Gudimallam Lingam is an ancient linga in the Parasurameswara Swamy Temple of Gudimallam, a small village near Tirupati city in the Yerpedu mandal of the Tirupati district of Andhra Pradesh, India. It is situated about 13 kilometers south-east of Tirupati city.
Gudimallam lingam (as it appeared before the floor was lowered): front, rear & side elevations, with sectional plan.
Gudimallam statue details
Views from different angles of a replica of relatively recent date