Absolutely fascinating and breathtaking place! I'm surprised that I never heard of it before... I discovered it two days ago, through a portion in this video (from 09:46 - 18:22):
https://www.dailymotion.com/video/x4rt5xu
That temple is part of the huge Ellora Caves system:
https://en.wikipedia.org/wiki/Ellora_Caves
The temple is supposed to have been build in 756-773 AD:
https://en.wikipedia.org/wiki/Kailasa_temple,_Ellora
wikipedia said:
A megalith carved out of one single rock
Judging by the amount of rock being used (or rather removed from it, since it is completely carved out of one solid rock formation), it was certainly a huge undertaking, if we are to believe that it was really carved out with normal tools of that time frame. Judging from the amount of material that was needed to create/remove it, it must be the biggest megalithic structure I've seen as of yet.
The german wikipedia page says that 150.000 - 200.000 tons (according to other data even 400.000 tons) of rock had to be removed there in order to carve it out:
https://de.wikipedia.org/wiki/Kailasa-Tempel
I noticed that neither article from wikipedia (not the english nor the german one) has a couple of the really interesting datas mentioned.
Like the stone material out of which it was carved. It took me quite a enormous amount of time to find it mentioned somewhere:
https://en.wikipedia.org/wiki/Kailasanathar_Temple
Kailasa temple, Ellora, Rastrakuta-Pallava rock cut black granite megalithic Shiva temple of the Ellora Caves, near Aurangabad in Maharashtra
So they say there that it is black granite. It certainly looks like a very hard stone. To find what type of stone it is proved quite hard. No article I could find about the temple mentions the type of stone out of which it was cut. I don't quite understand this. That mentioning above is the only one I could find about what type of stone it is.
All the black granite's that I could find from india, have the hardness of 6.5 in the Moh's Scale:
http://www.indian-granit.com/buy_granites_india.html
So the stone from the temple has most likely that hardness. It is one of the hardest stones in nature. Here is the Moh Scale:
https://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness
A very hard stone that is even harder to process let alone "for primiitive people".
It doesn't stop there though. under the structure is supposedly a vast tunnel system, carved into that rock and I'm assuming it is connected to the rest of the Ellora Cave system, motioned above.
Absolutely fascinanting to think about how, who, when and for what purpose this original structure was created. Somehow normal archaeological explanations for the creation of that temple seem simply impossible, to say the least.
Interestingly the name Kailasa sounds very similar to the holy Mount Kaliash in the Himalaya in Tibet:
https://en.wikipedia.org/wiki/Mount_Kailash
Mount Kailash said:
It is considered a sacred place in four religions: Bön, Buddhism, Hinduism and Jainism.
A couple of cool pictures and descriptions can be found here:
http://www.unbelievable-facts.com/2016/02/temple-carved-from-a-single-rock.html
http://www.kamit.jp/02_unesco/03_kailasa/kai_eng.htm