Kailasa Temple

The Kailasa temple is one of the largest rock-cut ancient Hindu temples located in Ellora, Maharashtra, India. A megalith carved out of one single rock, it is considered one of the most remarkable cave temples in India because of its size, architecture and sculptural treatment.
The Kailasa temple (Cave 16) is one of the 34 cave temples and monasteries known collectively as the Ellora Caves. Its construction is generally attributed to the 8th century Rashtrakuta king Krishna I. The temple architecture shows traces of Pallava style.

The construction of the temple is often attributed to the Rashtrakuta king Krishna I (r. 756-773 CE), based on certain epigraphs that link the temple to Krishnaraja. However, such identification is problematic, because these epigraphs are not physically connected to the caves, and do not date Krishnaraja's reign.
The Baroda plates (c. 812-813 CE), issued around 40 years after the reign of Krishna I, mention Krishnaraja as the patron of Kailasanatha, and also mention a Shiva temple at Elapura (Ellora). These plates record the grant of a village by Karkaraja II, a ruler of a Rashtrakuta branch of Gujarat. According to these plates, the king constructed a temple so wonderous that even the gods and the architect were astonished. Most scholars believe that this is a reference to the Kailasa Shiva temple at Elora. However, the land grants issued by successors of Krishna I do not contain any such references.

Construction method:
The Kailasa Temple is notable for its vertical excavation—carvers started at the top of the original rock, and excavated downward. The traditional methods were rigidly followed by the master architect which could not have been achieved by excavating from the front.

https://en.wikipedia.org/wiki/Kailasa_temple,_Ellora