Samudra Tapu glacier 'robot', Lahaul
On 27 September 2004 an ISRO and Geological Survey of India glacier team near Chandra Tal, Himachal Pradesh, watched a small white upright figure move along a ridge and then appear to rise away.
2004 CE · 32.48, 77.55 · status: unexplained
The account
Team leader Anil Kulkarni of ISRO's Space Applications Centre described the object to the Hindustan Times; accounts speak of a four-foot, robot-like form seen for about 40 minutes at roughly 4,500 m. India Today reported that a report went to the Prime Minister's Office and the army.
The sceptical view
India Today itself floated a spy drone or balloon. Accounts differ on team size, altitude and what was seen, and no images were released.
The researched reading
A glacier survey team watched a small white figure on a ridge near the Chinese border. A balloon or surveillance device is the best explanation of the contradictory accounts.
| Explanation | Weight | Why |
|---|---|---|
| Something known, misidentified | 40% | Early accounts describe a white object the team first took for a balloon, and the leader reportedly mentioned balloons attached to it; a balloon drifting and rising along a ridge at 4,500 m fits being "robot-like" from a distance. |
| Secret human technology | 28% | India Today suggested a spy drone or balloon; the area is close to the disputed border with China, and surveillance balloons are used there. |
| Perception, memory or mind | 10% | At high altitude, fatigue and hypoxia affect perception, and accounts disagree on team size, height and behaviour. |
| Genuinely anomalous | 10% | A scientific team watched something for about 40 minutes, but no image was released and the descriptions vary. |
| A known natural phenomenon | 4% | Mist or snow plumes on a ridge can look like moving figures, though 40 minutes is long for that. |
| A poorly understood natural phenomenon | 3% | Nothing points to an unusual natural phenomenon. |
| A hoax or fabrication | 3% | Reported by government scientists; no sign of fabrication. |
| Undetermined | 2% | The share a generic explanation had beyond what has been shown for this case: it fits many cases like this one, but has not been demonstrated for this one. |
Official position: A report reportedly went to the Prime Minister’s Office and the army; no conclusion was published.