I don't know what any of of it is about ,never mind the swirly things .Roy . 1-3 rings ,usually around cups are fairly frequent , 5 and upwards are much less common , spirals rare in open air RA and much more common in passage engravings .
You'd never have known this if you hadn't attended that lunch time lecture held at Gled Law, RAM 2005 ;-)
Lol . When counting stuff it still brings a smile or the occasional full bellow .