Black sack with what looks like blood vessels

Black sack with what looks like blood vessels

Observation - Black sack with what looks like blood vessels. Description: There were two of these found by the resvervoir on the Denbigh moors. One was slightly squashed as can be seen in the second image, inside apears to be something like intestines with blood vessels. Shiny and dry on the outside and roughly an inch in size.

There were two of these found by the resvervoir on the Denbigh moors. One was slightly squashed as can be seen in the second image, inside apears to be something like intestines with blood vessels. Shiny and dry on the outside and roughly an inch in size. The path was close to an area of marshy ground but also very close to heathland...