Cauldrons are sercret places where the machines are made. They are equivalent to dungeons. At the end of a cauldron there is a boss for you to fight. Defeating the boss will allow you to override more machines out in the wild.
This fight was annoying due to all the watchers running around and getting in the way. Overriding one of them really did make a difference. I'm surprised the little guy lasted so long.
![](https://s2.save4k.ru/pic/HIYmKJLB8PM/maxresdefault.jpg)