Julia M. Usher posted:
Hi, again, this is basically what cookiers refer to as "cratering". We've got tons on this topic in the forums already. Please search the forums first before adding new topics, as we do try to keep all related content under existing threads rather than spawning new threads on the same topic. I believe I left instructions for using the search feature in a post from yesterday, but if you have any questions, do let me know. The search function on this site is quite powerful.
I am sorry I posted when it had been covered. I did not realize it was called cratering. I searched for the word "sinking".