JAI MA!
This is the famous scene of Sri Ramakrishna feeding Ma Kaali.
The story of Ma Kaali stepping on her Lord, Shiva is well known to all:
Ma Kaali was tired of all the evil things happening in the world and wanted to destroy it.
But in Her anger, she wanted to destroy everyone and everything, not just those who were doing evil.
So Shiva lay down on her path, and when she stepped over Him, she realized her mistake and stopped.
Thus Pralaya was avoided.
Aum Namah Shivaye