On Thursday, February 21, 2019 at 10:01:04 PM UTC-5, Tim Daneliuk wrote:
62 year old home renovated about 3 years ago. This portion of the interior basement was
left alone. What is this - an old coal chute perhaps?

http://www.mediafire.com/view/v070ra...coalchute.jpg#

There is noting on the exterior of the home to indicate this is present.

As you can see it is seeping moisture. I suspect the interior box has corroded and
is now leeching moisture into the basement and then setting up mold.

So...

1) What is it?

2) Any concern about opening it up and looking inside?

3) How to remediate?

TIA,
Tim

As stated by others...access to clean out FP or chimney droppings. Likely to find skeletons/remains of birds/squirrels/bats, etc...May not be for the squeamish...
Chimney cap is in order, imho