Turns out the OP was from Delhi India. Here is a map.
I kept working with him through email, for months Chetan being an astrologer sat in the chamber meditating without digging (or at least very much). Then it got to hot and waited for cooler weather. I askem him if he knew anyone who owns a metal detector... absolutely nobody, some places the ordinary person isn't allowed. I don't know about India, here there wan't any to get.
These pics don't really give a full view of this secret temple chamber. I wondered sometimes if it wasn't used as a burial for a special person. Might be another reason why putting off any excavation. For centuries these chambers have been guarded secrets, understandable a temple owner would be quiet about anything discovered. I had a whole batch of photos plus a cellphone video to look over.
A comment to note...
Dear red desert.
Where you have marked a white mark, I found a man-made room that is closed on all four sides.
Now dear you tell me what will i do now
From this comment...
Hello
I had posted a post in the year 200 years ago that one of the posts of the 200 year old temple came in the wall, the brick that came out on the other side also came out on the other side, there is no way to go inside a room which is closed from all sides. Now from that little place I have taken the inside photo in the camera plz dowes these site
Thnax so much
This is how the temple wall ooked before the search. I'm thinking the rectangle (on far-left side) is where the secret chamber was found and map drawing underneath.