It’s like they spent a lot of time and effort thinking about, how many different ways can we make this more terrifying? I’m having trouble coming up with anything else they could do short of anything really blatant like attaching it to a mobile body with flailing meat grinder arms and giving it a blood curdling 100 decibel scream.
Assuming they were dropped by whoever installed that plug, 100,000 years, as estimated by the experts cited by the article.