It's a Thuggee ceremony. They're worshipping Kali.
6 seconds sound clip from the Indiana Jones and the Temple of Doom movie soundboard.
You can hear this line at 01:00:50 in the Blu-ray version of the movie.
Quote context
[...]
- Got it!
- Get 'em off of me! Get 'em off of me! They're all over me! Get 'em off me!
- Come on! Go! Move! Come on, move! Come on!
- It's a Thuggee ceremony. They're worshipping Kali.
- Have you ever seen anything like this before?
- Nobody's seen this for a hundred years.
- Kali Ma. Kali Ma... Kali Ma!
[...]