"None Shall Pass" is a phrase often associated with the concept of impenetrability or an unyielding barrier. It suggests that no one can cross a certain point or achieve a specific goal without permission or the right conditions. This phrase has been used in various contexts, including literature, film, and gaming, to signify challenges or obstacles that must be overcome. In popular culture, "None Shall Pass" is notably recognized as the title of a 2006 album by the British band Doomriders. The phrase also appears in the Monty Python film "Monty Python and the Holy Grail," where it is used by the character Bridgekeeper to challenge those seeking to cross a bridge.