Found a big hole in my garden...

[Screech20]

Hey guys,
When I started breaking up an old brick built shed I wondered what was going on when my shovel disappeared when I started digging at the edge of the slab.

I've now got the slab broken up and started investigating why the slab seemed to be 'floating', and found a brick build hole, that's kind of filled in.

Any ideas what it could be before I just fill it back up and slab it.


This is where my shovel disappeared

I'm now at least a foot down, to this:

The top 3 or 4 courses where built up square, then it seems to go round down from there...

Any ideas?

Cheers

 

[JohnD]

ice vault maybe

Is it lime mortar?

Do the bricks look very old?

Is it in the gardens of an old large house?

what sort of size do you think?

 

[Screech20]

A what what?

Not sure about the mortar, bricks look old, with a few hits they just crumble.

Not in a big place, just a bungalow with average garden.

Thing it around a meter diameter

Cheers

 

[JohnD]

try to fish out one of the old bricks complete, and measure it, accurately, in inches.

If it has a frog, is it of sharp regular shape, and are there letters in it?

are the corners of the brick sort of irregularly cracked?

Lime mortar is soft enough to crape out with a spoon or a pointy stick.

are you in a bit of a dip, or at least level ground? might be a well.

It could relate to an old house that is no longer there, I meant.