A few people tried to guess what the photo was of in the following post:
https://steemit.com/monochromemonday/@azfix/monochrome-monday-trinket-from-thailand
Knew right away that is was a photo of a toy kids or adults in my case play with by rubbing the stick on the back of the frog statue. The sound that you hear is something like a frog or other croaking type animal and can be intensified by the way you move the wood along the carvings back.
My steemit friends below wanted to know more about it, so here it is above and below
Below is the photo from the original post, congratulations to for figuring it out!