Indian operations in the basement were a mystery for many years, though light has recently been shed on what appears to be a very disturbing story.
The Indian Gate exists under Pokhran. It was opened during Operation Shakti, a string of five atomic tests conducted in 1998. It is also known that it was the Shakti III experimental device that created the Gate.
The Indians were apparently unaware of the Dungeon's existence before discovering their Gate. Accordingly they followed the normal exploratory path most nations have taken, sending in a mixed team of scientists and soldiers.
Leading this team was "the Indian Einstein" a polymath attached to BARC in Mumbai known only as The Surgeon (aka The Doctor). The team met with disaster and The Surgeon returned changed, either due to extreme hybridization or replacement by a xenofauna species unknown to LONG STAIR.
The Surgeon convinced the Indian government that he was the best qualified individual to manage delving operations and he was given funding, personnel and almost unlimited authority over the Indian project. Observers attached to the project gave him lavish praise and The Surgeon's tight control over information and personnel movement gave the Indian government few other insights. A slow but steady stream of xenotech and scientific discoveries allowed The Surgeon to manage the Indian project as an essentially private (and inhuman) operation for many years.
While The Surgeon claimed such secrecy was necessary to protect the nation, a cabal within the government grew suspicious and many efforts were launched to determine The Surgeon's true loyalty. Contacts from the Brazilian operation (who were violently opposed to The Surgeon for unclear reasons, though their Drow allies are suspected) fueled those suspicions.
Eventually even a xenotech equipped genius like The Surgeon was unable to continue his deception. The Indian National Security Guards (aka Black Cats) recently retook the Pokhran facility in a horrific battle. The Surgeon managed to escape justice and is now believed to be working for the Chinese program.
While the Indian Gate is now firmly under government control, the current status and future plans of their program are unknown.
Physical descriptions are a bit sketchy, but they all seem to agree he has tentacles around his mouth. While operating at Pokhran, he surgically 'improved' troops stationed there. Not all of the procedures were successful, and the failures have their brains eaten.
The Brazilians and their allies are after this guy something serious, offering up a horde of xenotech for his head. The Brazilians have put out feelers and will pay cold hard cash for it, since they feel they can negotiate the best deal.