A Talk on Broken Hill

Walking with a grade 3 girl to her lesson, we started talking about NAPLAN (groan). 

Girl [excited]: But the good thing is, we don't have any homework next week!
Me: Well, that's a nice thing.
Girl: But - we did have three assignments this week.
Me: Three?!
Girl: Yep.  Well, one of them was a talk.  We had to talk about a town.
Me: Which one did you do?
Girl: Broken Hill.
Me: Ooh, what can you tell me about Broken Hill?
Girl: Ummm... Ahhh...
Me: Well, where is it?
Girl: It's, like, in the middle of Australia.
Me: Which state is it in?
Girl [in the "I'm giving a talk" tone of voice]: It's in outback New South Wales.
Me: Now, this is something I've always wanted to know - why is it called Broken Hill?
Girl [obviously pleased she could divulge knowledge]: Well, it's because when Charles Sturt jumped off the boat, he saw this ... hill... and thought it looked... broken.
Me: Ah.  So, is there a river or something?  For him to jump off the boat?
Girl [looking a bit confused]: Um... No, when he sailed on the ocean.
Me: Hang on a minute.  Australia looks like this [I drew a very quick squiggly outline of Australia in the air, with a tiny Tasmania at the bottom which made her giggle].  You just told me that Broken Hill is in the middle of Australia [vigorous nod] - so, how is Charles Sturt jumping off a ship on the ocean and seeing Broken Hill.
Girl: Ooh.  I mean, a lake.
Me: A lake?  Really?  Are you sure it wasn't a river?
Girl: Oh yeah.  Yeah, it was a river.

Well, I did learn 2 things.  Even more, really (I might include the end-of-lesson discussion soon).  But I didn't know why it's called Broken Hill, and I didn't know that Charles Sturt was the one who discovered it.