What are the numbered carvings out of the stones on top of Stanage Edge?

Question

THE CARVINGS LOOK LIKE WATER COLLECTION POINTS WITH LONG THIN TROUGHS RUNNING INTO THEM FOR THE WATER I PRESUME TO DRAIN DOWN INTO THE TROUGH. I FOUND NUMBERS BETWEEN 9 AND 30 AND THEY RUN ALONG PART OF THE RIDGE NEAR TO THE DISCARDED MILSTONES WHICH ARE AT THE BOTTOM

Answer 1

"Along the summit of the edge is a series of small rock basins only a few centimetres deep, engraved with a number from 1 to 100. Research by Peak Park rangers confirmed that they were made by 19th century gamekeepers to collect rainwater for the red grouse. In dry periods, local children carried water up to the small hollows to keep them full. The basins were numbered so that landowners were not charged for carving any holes twice. Only the first 34 basins are on access land."
http://www.peaklandheritage.org.uk/index.asp?peakkey=00503221

Answer 2

You are very perseptive! How did you know about these numbers? Did you climb to the top?

Archiologists: what do you say?!!!

All the best!/