There wasn't Alan, It is a good size enclosure as I have said, but no other visible substrate, in fact one of the giraffes also sat down rather hard and it looked very uncomfortable and harsh to watch. I wish also they could have a view out, it is basically the bottom of a quarry, the aviaries are amazing, but the ungulates aren't so lucky.
I may have mixed up the zebra species I will see if I have a photo of the signage to check.
Dean