a poetical response following close observation: pebbles for rivers of stones
These things usually come in threes, as my mum used to say! Makes you wonder where they came from.
I'll let you know if I see one tomorrow - and I've been racking my brains for even the most ludicrous explanation ...
Lines is fine - but Stones still has word verification on it... You can delete this comment now. :)
'Tis done - and thank you