Today's mystery item question

Yes folks, today, instead of sharing something I have done in the garden, or answering enquiries, I have a Quick Quiz Question for you:

What is this stuff?

The situation is a shingle path running alongside an old stone boundary wall.

As you can see, there is quite a lot of moss and weedy bits within the shingle.

But what are those roundy things?

There's a huge pile of them, proportionally, just at this point on the path.

Clue: it's nothing to do with the apparent hole at the base of the wall, that's an optical illusion, and is actually just a shallow indentation between stones.

Answers on a postcard... ok, answers by email or by comment below.

And I'll reveal all, tomorrow!

If you're good.......

 

 

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