Odd yellow fruit - Thailand

Hi

I'm in Thailand for a year or so and am collecting photos of unusual (to me) plants. Recently I came across this one - see photo. The only comment I can add is that it smelled a little like a quince, and is quite heavy. Of course I didn't take a bite

I'm hoping someone can identify it and many more I have on file.

Thanks in advance!

Odd yellow fruit ( photo / image / picture from Snap's Garden )

Odd yellow fruit - side view ( photo / image / picture from Snap's Garden )

Odd yellow fruit - top view ( photo / image / picture from Snap's Garden )

 

I have no idea, but it does look kinda like a quince. I wonder if KK will know, or even Frank???

 

Thanks for looking EJ. A fellow blogger came to my rescue it's Dillenia indica or Elephant fruit. Even more odd on the inside it seems.

http://toptropicals.com/cgi-bin/garden_ ... nia_indica