coop/run on cobbles? will it be OK for the hens?

[Xtineart]

I'm looking at moving to a new home but the area where the coop and run would have to go is cobbled. As it's a historic listed property the cobbled cant be lifted or altered, and I wondered if it would be OK for the hens to live on a stone based run? (they'll still get supervised free-range in the fields as much as possible)

 

[Folly's place]

Sounds beautiful! Cobbles may help prevent predators from digging into the run, depending on how big and deep they are. Bedding on cobbles will be fine too. Will they be slippery if wet or not covered in bedding? Mary

 

[Xtineart]

I imagine they'll get mossy and slippery in the winter mostly, summer they should drain well and the idea of being able to hose and brush out the surface would help keep muck, smell and flies down. I suppose I was more worried about their comfort as they are currently on tree bark and sand mix so they can scratch away all day long.

 

[Biologrady]

Would it be a problem to put a sand run over the cobbles if it wasn't working out? I can't imagine it would damage them...