Grimrock

I dug it up once but I forgot to go back and dig it up again.
I usually dig an entire area and then reload because I hate how trashy it ends up looking with all those dug up holes all over.

If anyone can help me I would be most appreciative!!
thanks

edit:
I think I solved this. Is it true that buried treasure is randomized? So I may have dug that specific chest up and got something different?