The word "rathole" refers to a small, dark, and narrow hole or passage, often used as a hiding place or a poorly maintained and unorganized area. Full definition
But you know the old saw: Build a better rathole and rich men will beat a path to your door to throw money down it. (si.com)
That someone so gifted would toss his life down a twisted rathole is another strange thing re the strange case of AAR Contractor. (qtng.dreamhosters.com)
It was almost two in the morning, and I'd just emerged, blinking and dazed, from an hour lost to some online rathole. (dotearth.blogs.nytimes.com)