What are these? - NOT amateur radio

We saw these at Hare Park, Chippenham, near Cambridge. They are wooden, not stone, objects. They are about 3m from the tree. If they are part of the tree roots, they are odd.

Chippenham, near Cambridge - NOT amateur radio

 

This is a village near Cambridge, not to be confused withe the better known Chippenham.

Bark - NOT amateur radio

This bark was seen yesterday at Hare Park at Chippenham near Cambridge.  

There is different Chippenham in Wiltshire.

Hare Park Chippenham - NOT amateur radio

 

Last week at Hare Park Chippenham. Notice the cow.

Hare Park, Chippenham - NOT amateur radio

Yesterday, we went of a walk at Hare Park, Chippenham near here.  As the photo showed yesterday as well, there are plenty of snowdrops!