As can be seen from the photo, this stone was partly covered in grit which seemed to be coming from erosion from the natural break which runs through the centre of the stone. The grit partly obscures the cupmarks on the right of the photo.
The heather had been burnt away which made the stone fairly visible. There are 20 cups in total, two ringed.
Number 334 in "Prehistoric Rock Art of the West Riding. SE 13427 45390.