Thanks for the pictures Colin of the work that has been done on Pendle, sorry not to work you yesterday. The Lancashire Partnership have done a gradely job for sure:
https://www.burnleyexpress.net/news/what-s-going-on-at-the-top-of-pendle-hill-1-9286834
I have an affinity for Pendle Hill, it was the first proper hill I ever climbed with a school party on 29th November 1964. I was 12 years and one day old on that very day.
73 Phil
PS I expect the shelter has been positioned north of Big End to take advantage of the view towards the north and Blackpool. The wall / fence barrier to the north is at over 540m and the summit 557m.