We live in 90 year old house with an unfinished basement.
I've been working on removing a lot of the crap that the previous owner did, and removing a lot of concrete debris.
Then I ran into this hole. http://imgur.com/a/XIWGQ
It's sort of located between the chimney and the boiler, but not directly between. Once I started vacuuming out the concrete, the hole just kept getting bigger and bigger. Eventually I stuck my hand in and pulled out what looked like soaking wet fireplace remnants. The hole is wet and it seems like I may be touching the clay beneath the foundation.
Any idea what can I do about this?