Yes, we were not all family members, but we had to book online in advance as it was very popular, even at £50 it is prety good value because you go on the little zip line first, which is the third longest in the country, then you get a guided tour of the quarry on the way up to the big zip line, which is the longest in the northern hemisphere, and the fastest in the world, it takes about 25 minutes to get to the top in an adapted dumper lorry with a comentry as you go the view looking down the zip line is incredible.
I may go again.