Hadn't noticed this before so assume it is new.
Serched for a particular widget which is a physical item marked on a map.
A page on my site is No 3 in SERPS and imediately underneath the description it has a plus sign and link to: Show Map of this particular widget.
It looks as though it should be a link to something on my site but infact links to a Google map of the widget.
My site is the only one in the SERPS that has this link
My page does have a google map on it, though I notice this is missing from Google's preview of my page.
I was thinking of removing Google map from this page to a separate page with a link to it - am more likely to do that now