Sometimes when l read about stuff, l am amazed to discover facts that have been unknown to me, despite the fact that l feel l should have been aware of them.
One case in point is Ayers (Uluru) Rock in Australia. That's it in the bottom picture, looking magnificent, and yes, l have been aware of it for many, many years.
However, what l was not aware of until last week, was that it is not even the biggest rock hill in Australia, as there is also Mount Augustus / Burringurrah (The top two photographs), which is more than twice the size of it.
Admittedly Ayers looks aesthetically better, but even so, l never knew there was another one.
Annoyingly, the more you try to learn, the more you realise how much you don't know (including the fact that rock hills are known as Inselbergs).
I think l need a lie down.