We discuss the macroscopic quantum tunneling from black hole to white of same mass. Previous calculations in Ref.[1] demonstrated that probability is $p \propto \exp(-2S_\text{BH})$, where $S_\text{BH}$ entropy Schwarzschild hole. This particular suggests with minus sign hole, $S_\text{WH}(M)=- S_\text{BH}(M)= - A/(4G)$. Here we use a different way calculations. consider three types objects: an...