Should darkness rise from the depths of the cavern, the boundary between and man and mushi will vanish. Life itself will become bereft of death, and the natural order will crumble. The world as we know it will be no more. Mishappen beings and taboos unique to man lie in wait along the path of thorns...
I believe the opening will eventually close
أظنّ أنّ الفجوة ستغلق في النهاية
Der Zugang sollte sich schließen,
El hueco se cerrará una vez que el 
Sanekuimushi regrese a la normalidad.
Une fois qu’ils seront partis, 
elle se refermera d’elle-même.
Credo che l'apertura si chiuderà
Acredito que a abertura se fechará