Team Geofrog: I checked out the area. Someone, not something, did this. It's in an area that muggles usually wouldn't be. Ordinary people don't walk through drainage pipes under a highway off of a corporate park, especially when it only ends up next to a stream between highways. You know, not a peaceful or beautiful place. Just an exciting adventure. As it only got one find every 70 days on average in a metropolitan area, it's obvious people aren't interested in anything other than an LPC or MKH. As such, I removed the container. Maybe one day, it'll appear again as it is still watertight.
This is why we can't have nice things.