Found in a compost heap

Found in a compost heap

Observation - Found in a compost heap - UK and Ireland. Description: These are a collection of marshmallow-like egg shapes, joined together in an aggregate mass about 3 inches across. I found them towards the bottom of our compost heap when I was turning it. The heap hasn't been turned for about 4 months or so. I wonder i

These are a collection of marshmallow-like egg shapes, joined together in an aggregate mass about 3 inches across. I found them towards the bottom of our compost heap when I was turning it. The heap hasn't been turned for about 4 months or so.
I wonder if they are a snake's eggs.