We mentioned that Gomel is only recited on very specific cases. However, if something that defies nature takes place, such as if a boulder or roof collapsed on someone, and as a result, that person should have died, if he survives, he must recite a blessing every time he comes to that place. The blessing is "Barukh...She'asah Li Nes Bammaqom Hazzeh" (Who performed a miracle for me in this place).
When we say that he recites the blessing every time he comes to that place, that is only if he has not seen the place for at least thirty days, not counting the day he last saw it or the day he has visited it again. If, however, less than thirty days passed since the last time he was there (such as if the place was somewhere he passes most days on his way to work and so on), then he does not recite the blessing.
If someone had miracles of this nature happen to him at several different locations, he is obligated to mention all of them whenever he visits any one of the locations. (He says "Who performed for me a miracle in this place and... [and he names all the other places]).e shall look at the obligation of his heirs on another occasion.
(See Ben Ish Hai, Shanah Aleph, Parashath 'Eqeb, Oth Yod Aleph)
