From: Phenomenal Travel Videos
Here is another one that is hiding in plain sight. You can see a channel on the ground and there is a small rectangular opening at the end of this passage that would drain the water to the other side of the temple. But, I went to the other side of this rock but guess what? It is a solid stone!! So, there is no other way, except that this rectangular opening leads to the underground. Notice that the rectangular opening is only large enough for a 10 year old to go in? Since adult human beings can't access it, was it designed for human beings at all?
This is another hidden passage in Ellora caves that I tried to get through, but after 10 feet, it becomes so narrow that I can't go any further. Where do these mysterious tunnels lead? Who could have used such narrow passages? The other important question is: how can you carve such narrow passages if human beings cannot even get through them? Was it carved by humans at all? Were these carved for extraterrestrials that are smaller than human beings?
Notice how this entrance is clearly going underground, in this cave temple. These are underground areas hiding in plain sight. The security guards told me that there are several underground tunnels in Ellora caves which gradually become too narrow for human beings to access them, and all of them are locked. From these old doors, we can assume that these tunnels have been closed from public access at least 30 to 40 years ago.
These underground tunnels are not found in the same area, but are scattered over many different caves in Ellora, which stretches across a few miles. Is it possible that there could be a vast underground city like Derinkuyu in Turkey? Derinkuyu is an enormous underground city with advanced technical features that could accommodate more than 20,000 people, which was hidden for centuries only to be discovered in 1965.
If it is true that there is a vast underground city in Ellora, shouldn't there be ventilation shafts that would allow air from the ground to reach below. In Derinkuyu, there are thousands of holes drilled from the ground that act as ventilation shafts to the underground city. Look at this long ventilation shaft in Ellora caves that is drilled secretly in a dark chamber. It is about 4 inches wide, but it is so deep that we can't even see the other end. Could this be a ventilation shaft that reaches the underground city?
How about this ventilation shaft, which is also going underground? You can also see hundreds of holes like this drilled on the rock floor. Some of them are unfinished, and only few inches deep, but notice how the other holes have been closed with concrete recently. I asked why some of these holes have been closed and my tour guide told me that someone dropped their car keys into one of them, but these holes are so deep that they couldn't retrieve it. So, they just covered these holes by putting concrete over them.
What else could be the purpose of these deep holes on the floor, if they are not ventilation shafts? Why would hundreds of holes be drilled on these rock floors with painstaking efforts without any reason? Now, this is one of the abandoned, bat infested places and let's take a look at what's inside. This seems like a very old sanctum holding a lingam, which is a Hindu god. Centuries ago, plenty of water would be poured on this lingam everyday as part of religious worship, and it would drain through this channel. Notice that this water drain has been closed recently with some rocks. Where would the water go? Let's see...It would go vertically down through this tunnel.
Unless there is an area underground, this would be pointless because the water would just overflow all over the place! All over Ellora caves, there are hundreds of idols which would require thousands of gallons of water poured on them every day. Was this a technique to get clean water underground that could be used for different purposes?"