I had 3 goes at finding it when collecting, am certain I was on the correct little rocky spur as on the third time I had come up from the boulder and rockface to the SE - but no mini-flag, so then I checked all the other rocky ground in the vicinity but I'll still have to go back and look for it again on another day...
I did, although to be honest I didn’t really know where I was and just stumbled upon it after having searched a bit higher up. I’m sorry it ended up being such an epic day for you, we’ll have to try and coordinate to share the load between everyone a bit more next time.